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TN State Board 12th Physics Model Question Paper 2 English Medium

General Instructions:

• The question paper comprises of four parts.
• You are to attempt all the parts. An internal choice of questions is provided wherever applicable.
• All questions of Part I, II, III, and IV are to be attempted separately.
• Question numbers 1 to 15 in Part I are Multiple Choice Questions of one mark each.
  These are to be answered by choosing the most suitable answer from the given four
  alternatives and writing the option code and the corresponding answer
• Question numbers 16 to 24 in Part II are two-mark questions. These are to be answered
  in about one or two sentences.
• Question numbers 25 to 33 in Part III are three-mark questions. These are to be answered
  in about three to five short sentences.
• Question numbers 34 to 38 in Part IV are five-mark questions. These are to be answered
  in detaiL Draw diagrams wherever necessary.

Time: 3 Hours
Max Marks: 70

Part – I

Answer all the questions. Choose the correct answer. [15 x 1 = 15]

Question 1.
Three capacitors are connected in triangle as shown in the figure. The equivalent capacitance between points A and C is……………………………..
(a) 1 μF
(b) 2 μF
(c) 3 μF
(d) 1/4 μF

Answer:
(b) 2 μF

Question 2.
If the electric field in a region is given by \(\overrightarrow{\mathrm{E}}=5 \hat{i}+4 \hat{j}+9 \hat{k}\), then the electric flux through a surface of area 20 units lying in the
y – z plane will be …………………
(a) 20 units
(b) 80 units
(c) 100 units
(d) 180 units
Answer:
(c) 100 units
Hint. The area vector
\(\overrightarrow{\mathrm{A}}=20 \hat{i} ; \overrightarrow{\mathrm{E}}=(5 \hat{i}+4 \hat{j}+9 \hat{k})\)
Flux ( φ)\(\overrightarrow{\mathrm{E}} \cdot \overrightarrow{\mathrm{A}}\) = 5 x 20 = 100 units

Question 3.
A wire of resistance 2 ohms per meter is bent to form a circle of radius 1 m. The equivalent resistance between its two diametrically opposite points, A and B as shown in the figure is

(a) π Ω
(b) \(\frac{\pi}{2} \Omega\)
(c) 2π Ω
(d) \(\frac{\pi}{4} \Omega\)
Answer:
(b) \(\frac{\pi}{2} \Omega\)

Question 4.
A non-conducting charged ring of charge q, mass m and radius r is rotated with constant angular speed co. Find the ratio of its magnetic moment with angular momentum is …………..
(a) M
(b) \(\frac{3}{\pi} \mathrm{M}\)
(c) \(\frac{2}{\pi} \mathrm{M}\)
(d) \(\frac{1}{2} \mathrm{M}\)

Answer:
(b) \(\frac{3}{\pi} \mathrm{M}\)

Question 5.
A proton enters a magnetic field of flux density 1.5 Wb/m² with a speed of 2 x 10⁷ m/s at angle of 30° with the field. The force on the proton will be ……………….
(a) 0.24 x 10^-12 N
(b) 2.4 x 10 ^-12 N
(c) 24 x 10^-12 N
(d) 0.024 x 10^-12 N
Answer:
(b) 2.4 x 10 ^-12 N
Hint: F = Bqv sin θ = 1.5 x 1.6 x 10^-19 x 2 x 10⁷ x sin 30°= 2.4 x 10^-12 N

Question 6.
In an electrical circuit, R, L, C and AC voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage and current in the circuit is \(\frac{\pi}{3}\) Instead, if C is removed from the circuit, the phase difference is again \(\frac{\pi}{3}\) . The power factor of the of the circuit is ……………
(a) \(\frac{1}{2}\)
(b) \(\frac{1}{\sqrt{2}}\)
(c) 1
(d) \(\frac{\sqrt{3}}{2}\)
Answer:
(c) 1

Question 7.
The inductance of a coil is proportional to…………………………………….
(a) its length
(b) the number of turns
(c) the resistance of the coil
(d) square of the number of turns
Answer:
(d) square of the number of turns

Question 8.
The electric and magnetic fields of an electromagnetic wave are……………….
(a) in phase and perpendicular to each other
(b) out of phase and not perpendicular to each other
(c) in phase and not perpendicular to each other
(d) out of phase and perpendicular to each other
Answer:
(a) in phase and perpendicular to each other

Question 9.
One of the of Young’s double slits is covered with a glass plate as shown in figure. The position of central maximum will ……………
(a) get shifted downwards
(b) get shifted upward
(c) will remain the same
(d) data insufficient to conclude

Answer:
(b) get shifted upward

Question 10.
The wavelength λ_e of an electron and λ_p of a photon of same energy E are related ………..

Answer:
(d) \(\lambda_{p} \propto \lambda_{e}^{2}\)

Question 11.
A system consists of N_o nucleus at t = 0. The number of nuclei remaining after half of a half-life (that  is, at time \(t=\frac{1}{2} \mathrm{T}_{\frac{1}{2}}\)
Answer:

Hint:

Question 12.
In a pure semiconductor crystal, if current flows due to breakage of crystal bonds, then the semiconductor is called……………………………….
(a) acceptor
(b) donor
(c) intrinsic semiconductor
(d) extrinsic semiconductor
Answer:
(c) intrinsic semiconductor
Hint: Pure semiconductors are called intrinsic semiconductors.

Question 13.
The light emitted in an LED is due to……………………………
(a) Recombination of charge carriers
(b) Reflection of light due to lens action
(c) Amplification of light falling at the junction
Answer:
(a) Recombination of charge carriers

Question 14.
The frequency range of 3 MHz to 30 MHz is used for………………………………..
(a) Ground wave propagation
(b) Space wave propagation
(c) Sky wave propagation
(d) Satellite communication
Answer:
(c) Sky wave propagation

Question 15.
The materials used in Robotics are……………………..
(a) Aluminium and silver
(b) Silver and gold
(c) Copper and gold
(d) Steel and aluminium
Answer:
(d) Steel and aluminium

Part – III

Answer any six questions. Question No. 20 is compulsory.   [6×2 = 12]

Question 16.
Define ‘Electric dipole’
Answer:
Two equal and opposite charges separated by a small distance constitute an electric dipole.

Question 17.
Define current density.
Answer:
The current density (J) is defined as the current per unit area of cross section of the conductor
\(\mathrm{J}=\frac{\mathrm{I}}{\mathrm{A}}\)
The S.I. unit of current density. \(\frac{\mathrm{A}}{\mathrm{m}^{2}}(\text { or }) \mathrm{Am}^{-2}\)

Question 18.
What is magnetic susceptibility?
Answer:
It is defined as the ratio of the intensity of magnetisation \((\overrightarrow{\mathrm{M}})\) induced in the material due to magnetising field \((\overrightarrow{\mathrm{H}})\)
\(\chi_{m}=\left|\frac{\overrightarrow{\mathrm{M}}}{\overrightarrow{\mathrm{H}}}\right|\)

Question 19.
What is meant by electromagnetic induction?
Answer:
Whenever the magnetic flux linked with a closed coil changes, an emf (electromotive force) is induced and hence an electric current flows in the circuit.

Question 20.
A coil of 200 turns carries a current of 0.4 A. If the magnetic flux of 4 mWb is linked with the coil, find the inductance of the coil.
Answer:
Number of turns, N = 200; Current, I = 0.4 A
Magnetic flux linked with coil, φ = 4 mWb = 4 x 10^-3 Wb
Induction of the coil , L
\(\mathrm{L}=\frac{\mathrm{N} \phi}{\mathrm{I}}=\frac{200 \times 4 \times 10^{-3}}{0.4}=\frac{800 \times 10^{-3}}{0.4}=2 \mathrm{H}\)

Question 21.
Why do stars twinkle?
Answer:
The stars actually do not twinkle. They appear twinkling because of the movement of the atmospheric layers with varying refractive indices which is clearly seen in the night sky.

Question 22.
How many photons of frequency 10¹⁴ Hz will make up 19.86 J of energy?
Answer:
Total energy emitted per second = Power x time
19.863 = Power x is
∴ Power 19.86 W
Number of photons =

Question 23.
Define curie.
Answer:
One curie was defined as number of decays per second in 1 g of radium and it is equal to 3.7 x 10¹⁰ decays/s

Question 24.
A transistor having α =0.99 and V_BE = 0.7V, is given in the circuit. Find the value of the collector current.
Answer:

Part – III

Answer any six questions. Question No. 26 is compulsory.   [6 x 3 = 18]

Question 25.
Write a short note on ‘electrostatic shielding’.
Answer:
Consider a cavity inside the conductor. Whatever the charges at the surfaces and whatever the electrical disturbances outside, the electric field inside the cavity is zero. A sensitive electrical instrument which is to be protected from external electrical disturbance is kept inside this cavity. This is called electrostatic shielding.

Question 26.
A conductor of linear mass density 0.2 g m^-1 suspended ,by two flexible wire as shown in figure. Suppose the tension in the supporting wires is zero when it is kept inside the magnetic field of 1 T whose direction is into the x page. Compute the current inside the conductor and also the direction of the current. Assume g = 10 m s^-2 = 111.87.
Answer:

Question 27.
How is Eddy current produced? How do they flow in a conductor?
Answer:
Even for a conductor in the form of a sheet or plate, an emf is induced when magnetic flux linked with it changes. But the difference is that there is no definite loop or path for induced current to flow away. As a result, the induced currents flow in concentric circular paths. As these electric currents resemble eddies of water, these are known as Eddy currents. They are also called Foucault currents.

Question 28.
Explain the concept of intensity of electromagnetic waves.
Answer:
The energy crossing per unit area per unit time and perpendicular to the direction of propagation of electromagnetic wave is called the intensity.
Intensity, I = (u)c

Question 29.
If the focal length is 150 cm for a glass lens, what is the power of the lens?
Answer:
Given: focal length,f = 150 cm (or) f= 1.5 m
Equation for power of lens is, P = 1/f
Substituting the values,
\(P = \frac{1}{1.5}\)= 0.067 diopter
As the power is positive, it is a converging lens.

Question 30.
A proton and an electron have same kinetic energy. Which one has greater de Broglie wavelength. Justify.
Answer:
de-Broglic wavelength of the particle is \(\lambda=\frac{h}{p}=\frac{h}{\sqrt{2 m \mathrm{K}}}\) \(\text { i.e. } \lambda \propto \frac{1}{\sqrt{m}}\)
As m_e <<m_p ,so λ_e >>λ_P
Hence protons have greater de- broglic wavelength

Question 31.
Distinguish between avalanche and zener breakdown.
Answer:

Avalanche Breakdown	Zener Breakdown
It occurs injunctions which are lightly and have wide depletion widths.	It occurs in junctions which are heavily doped and have narrow depletion widths.
It occurs at higher reverse voltages when thermally generated electrons get enough kinetic energy to produce more electrons by collision.	It occurs due to rupture of covalent bonds by strong electric fields set up in depletion region by the reverse voltage.
At reverse voltage above 6V breakdown is due to avalanche effect.	At reverse voltage below 6V breakdown is due to zener effect.
Electric field produced is weak in nature.	A strong electric field is produced
Charge carriers obtain energy from the applied potential.	Zener current is independent of applied voltage.

Question 32.
Explain centre frequency or resting frequency in frequency modulation.
Answer:
When the frequency of the baseband signal is zero (no input signal), there is no change in the frequency of the carrier wave. It is at its normal frequency and is called as centre frequency or resting frequency.

Question 33.
What are black holes?
Answer:
Black holes are end stage of stars Which are highly dense massive object. Its mass ranges from 20 times mass of the sun to 1 million times mass of the sun. It has very strong gravitational force such that no particle or even light can escape from it. The existence of black holes is studied when the stars orbiting the black hole behave differently from the other starts. Every galaxy has black hole at its center. Sagittarius A* is the black hole at the center of the Milky Way galaxy.

Part – IV

Answer all the questions.  [5 x 5 = 25]

Question 34.
(a) How do we determine the electric field due to a continuous charge distribution? Explain. Electric field due to continuous charge distribution
Answer:
The electric charge is quantized microscopically. The expressions of Coulomb’s Law, superposition principle force and electric field are applicable to only point charges. While dealing with the electric field due to a charged sphere or a charged wire etc., it is very difficult to look at individual charges in these charged bodies.

Therefore, it is assumed that charge is distributed continuously on the charged bodies and the discrete nature of charges is not considered here. The electric field due to such continuous charge distributions is found by invoking the method of calculus.

Consider the following charged object of irregular shape. The entire charged object is divided into a large number of charge elements
Δq₁, Δq₂, Δq₃ ….. Δq_n ……… and each charge element Δq is taken as a point charge.
The electric field at a point P due to a charged object is approximately given by the sum of the fields at P due to all such change elements

Here Δ qi is the i^th charge element, r is the distance of the point P from the z^th charge element and \(\hat{r}_{i \mathrm{P}} \) is the unit vector from ith charge element to the point P.

However, the equation is only an approximation. To incorporate the continuous distribution of charge, we take the limit Δq → 0(= dq). In this limit, the summation in the equation becomes an integration and takes the following form
\(\overrightarrow{\mathrm{E}}=\frac{1}{4 \pi \varepsilon_{0}} \int \frac{d q}{r^{2}} \hat{r}\)

Here r is the distance of the point P from the infinitesimal charge dq and \(\hat{r}\) is the unit vector from dq to point P. Even though the electric field for a continuous charge distribution is difficult to evaluate, the force experienced by some test charge q in this electric field is still given by \(\overrightarrow{\mathrm{F}}=q \overrightarrow{\mathrm{E}}\)

(a) Line charge distribution: If the charge Q is uniformly distributed along the wire of length L, then linear charge density (charge per unit length) is λ = Q/L. Its unit is coulomb per meter (Cm^-1). The charge present in the infinitesimal length dl is dq = λ dl
The electric field due to the line of total charge Q is given by

(b) Surface charge distribution: If the charge Q is uniformly distributed on. a surface of area A, then surface charge density (charge per unit area) is \(\lambda=\frac{Q}{L}\). Its unit is coulomb per square meter (Cm^-2 ). The charge present in the infinitesimal area dA is dq = adA. The electric field due to a of total charge Q is given by

(c) Volume charge distribution: If the charge Q is uniformly distributed in a volume V, then volume charge density (charge per unit volume) is given by \(\rho=\frac{Q}{V}\) . Its unit is coulomb per cubic meter (Cm^-3 ). The charge present in the infinitesimal volume element dV is dq = ρdV.
The electric field due to a volume of total charge Q is given by

[OR]

(b) Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its limitation.
Answer:
Ohm’s law: The Ohm’s law can be derived from the equation J = σE. Consider a segment of wire of length l and cross sectional area A.

When a potential difference V is applied across the wire, a net electric field is created in the wire which constitutes the current. For simplicity, we assume that the electric field is uniform in the entire length of the wire, the potential difference (voltage V) can be written as
V = El
As we know, the magnitude of current density
\(\mathrm{J}=\sigma \mathrm{E}=\sigma \frac{\mathrm{V}}{l}\)
But \(\mathrm{J}=\frac{\mathrm{I}}{\mathrm{A}}\),so we write the equation as
\(\frac{\mathrm{I}}{\mathrm{A}}=\sigma \frac{\mathrm{V}}{l}\)
By rearranging the above equations, we get
\(\mathrm{V}=\mathrm{I}\left(\frac{l}{\sigma \mathrm{A}}\right)\)

The quantity \(\frac{l}{\sigma \mathrm{A}}\) is called resistance of the conductor and it is denoted as R. Note that the resistance is directly proportional to the length of the conductor and inversely proportional to area of cross section.
Therefore, the macroscopic form of Ohm’s law can be stated as
V = IR …………….. (3)

Question 35.
(a) Calculate the magnetic held inside and outside of the long solenoid using Ampere’s circuital law.
Answer:
Magnetic field due to a long current carrying solenoid: Consider a solenoid of length L having N turns. The diametre of the solenoid is assumed to be much smaller when compared to its length and the coil is wound very closely.

In order to calculate the magnetic field at any point inside the solenoid, we use Ampere’s circuital law. Consider a rectangular loop abed. Then from Ampere’s circuital law.
\(\oint_{C} \overrightarrow{\mathrm{B}} \cdot d \vec{l}=\mu_{0} \mathrm{I}_{\text {enclosed }}\) = μ₀  x (total current enclosed by Amperian loop)

Since the elemental lengths along be and da are perpendicular to the magnetic field which is along the axis of the solenoid, the integrals.

Since the magnetic field outside the   solenoid is zero, the integral
\(\int_{c}^{d} \overrightarrow{\mathrm{B}} \cdot d \vec{l}=0\)
For the path along ab, the integral is

where the length of the loop ab is h. But the choice of length of the loop ab is arbitrary. We can take very large loop such that it is equal to the length of the solenoid L. Therefore the integral is

Let NI be the current passing through the solenoid of N turns, then

The number of turns per unit length is given by \(\frac{\mathrm{NI}}{\mathrm{L}}=n\) then
\(\mathrm{v}_{p}=\varepsilon_{p}=-\mathrm{N}_{p} \frac{d \Phi_{\mathrm{B}}}{d t}\)
Since n is a constant for a given solenoid and μ_o is also constant. For a fixed current I, the magnetic field inside the solenoid is also a constant.

[OR]

(b) Explain the construction and working of transformer.
Answer:
Construction and working of transformer:
Principle: The principle of transformer is the mutual induction between two coils. That is, when an electric current passing through a coil changes with time, an emf is induced in the neighbouring coil.

Construction: In the simple construction of transformers, there are two coils of high mutual inductance wound over the same transformer core. The core is generally laminated and is made up of a good magnetic material like silicon steel. Coils are electrically insulated but magnetically linked via transformer core.

The coil across which alternating voltage is applied is called primary coil P and the coil from which output power is drawn out is called secondary coil S. The assembled core and coils are kept in a container which is filled with suitable medium for better insulation and cooling purpose.

Working: If the primary coil is connected to a source of alternating voltage, an alternating magnetic flux is set up in the laminated core. If there is no magnetic flux leakage, then whole of magnetic flux linked with primary coil is also linked with secondary coil. This means that rate at which magnetic flux changes through each turn is same for both primary and secondary coils.

As a result of flux change, emf is induced in both primary and secondary coils. The emf induced in the primary coil ε_p is almost equal and opposite to the applied voltage υ_p and is given by
\(\mathrm{v}_{p}=\varepsilon_{p}=-\mathrm{N}_{p} \frac{d \Phi_{\mathrm{B}}}{d t}\)
The frequency of alternating magnetic flux in the core is same as the frequency of the applied voltage. Therefore, induced emf in secondary will also have same frequency as that of applied voltage. The emf induced in the secondary coil ε_s is given by
\(\varepsilon_{\mathrm{s}}=-N_{s} \frac{d \Phi_{\mathrm{B}}}{d t}\) ………………… (1)
where N_p and N_s are the number of turns in the primary and secondary coil, respectively. If the secondary circuit is open, then  ε_s = υ_s where υ_s is the voltage across secondary coil.
\(v_{s}=\varepsilon_{s}=-\mathrm{N}_{s} \frac{d \Phi_{\mathrm{B}}}{d t}\) ……….. (2)

From equations (1) and (2),
\(\frac{v_{s}}{v_{p}}=\frac{N_{s}}{N_{p}}=K\) …………………… (3)

This constant K is known as voltage transformation ratio. For an ideal transformer,
Input power υ_p i_p= Output power υ_si_s
where i_pand i_s are the currents in the primary and secondary coil respectively. Therefore,
\(\frac{v_{s}}{v_{p}}=\frac{N_{s}}{N_{p}}=\frac{i_{p}}{i_{s}}\) ………………….. (4)

Equation (4) is written in terms of amplitude of corresponding quantities,
\(\frac{V_{s}}{V_{p}}=\frac{N_{s}}{N_{p}}=\frac{I_{p}}{I_{s}}=K\)

(i) If N_s> N_p ( or K > 1), ∴ V_s > V_p and I_s < I_p. This is the case of step-up transformer in which voltage is increased and the corresponding current is decreased.

(ii) If N_s < N_p (or K < 1) , ∴ V_s < V_p and I_s > I_p . This is step-down transformer where voltage is decreased and the current is increased.

Question 36.
(a) Discuss the source of electromagnetic waves.
Answer:
Sources of electromagnetic waves: Any stationary source charge produces only electric field. When the charge moves with uniform velocity, it produces steady current which gives rise to magnetic field (not time dependent, only space dependent) around the conductor in which charge flows. If the charged -particle accelerates, in addition to electric field it also produces magnetic field. Both electric and magnetic fields are time varying fields. Since the electromagnetic waves are transverse waves, the direction of propagation of electromagnetic waves is perpendicular to the plane containing electric and magnetic field vectors.

Any oscillatory motion is also an accelerating motion, so, when the charge oscillates (oscillating molecular dipole) about their mean position, it produces electromagnetic waves. Suppose the electromagnetic field in free space propagates along z direction, and if the electric field vector points along y axis then the magnetic field vector will be mutually perpendicular to both electric field and the propagation vector direction, which means
E_y =E₀ sin (kz-ωt)
B_r = B₀ sin(kz – ωt) where, E_o and B_o are amplitude of oscillating electric and magnetic field,\(\hat{k} \) is a wave number, ω is the angular frequency of the wave and k (unit vector, here it is called propagation vector) denotes the direction of propagation of electromagnetic wave.

Note that both electric field and magnetic field oscillate with a frequency (frequency of electromagnetic wave) which is equal to the frequency of the source (here, oscillating charge is the source for the production of electromagnetic waves). In free space or in vacuum, the ratio between E_o and B_o is equal to the speed of electromagnetic wave, which is equal to speed of light c.
\(c=\frac{E_{0}}{B_{0}}\)

In any medium, the ratio of E_o and B_o is equal to the speed of electromagnetic wave in that medium, mathematically, it can be written as
\(v=\frac{E_{0}}{B_{0}}<c\)
Further, the energy of electromagnetic waves comes from the energy of the oscillating charge.

[OR]

(b) Explain about compound microscope and obtain the equation for magnification.
Answer:
Compound microscope:
The lens near the object, called the objective, forms a real, inverted, magnified image of the object. This serves as the object for the second lens which is the eyepiece. Eyepiece serves as a simple microscope that produces finally an enlarged and virtual image. The first inverted image formed by the objective is to be adjusted close to, but within the focal plane of the eyepiece so that the final image is formed nearly at infinity or at the near point. The final image is inverted with respect to the original object. We can obtain the magnification for a compound microscope.

Magnification of compound microscope
From the ray diagram, the linear magnification due to the objective is,
\(m_{0}=\frac{h^{\prime}}{h}\)
from the figure ,\(\tan \beta=\frac{h}{f_{0}}=\frac{h^{\prime}}{L} \), then
\(\frac{h^{\prime}}{h}=\frac{L}{f_{0}} ; m_{o}=\frac{L}{f_{o}}\)

Here, the distance L is between the first focal point of the eyepiece to the second focal point of the objective. This is called the tube length L of the microscope as f_o and f_e are comparatively smaller than L. If the final image is formed at P (near point focusing), the magnification m_e of the eyepiece is,
\(m_{e}=1+\frac{D}{f_{e}}\)

The total magnification m in near point focusing is,
\(m=m_{o} m_{e}=\left(\frac{L}{f_{o}}\right)\left(1+\frac{D}{f_{e}}\right)\)

If the final image is formed at infinity (normal focusing), the magnification m_e of the eyepiece is
\(m_{e}=\frac{D}{f_{e}}\)

The total magnification m in normal focusing is,
\(m=m_{o} m_{e}=\left(\frac{L}{f_{o}}\right)\left(\frac{D}{f_{e}}\right)\)

Question 37.
(a) Briefly explain the principle and working of electron microscope.
Answer:
Electron Microscope:
Principle:

• This is the direct application of wave nature of particles. The wave nature of the electron is used in the construction of microscope called electron microscope.
• The resolving power of a microscope is inversely proportional to the wavelength of the radiation used for illuminating the object under study. Higher magnification as well as higher resolving power can be obtained by employing the waves of shorter wavelengths.
• De Broglie wavelength of electron is very much less than (a few thousands less) that of the visible light being used in optical microscopes.
• As a result, the microscopes employing de Broglie waves of electrons have very much higher resolving power than optical microscope.
• Electron microscopes giving magnification more than 2,00,000 times are common in research laboratories.

Working:

• The electron beam passing across a suitably arranged either electric or magnetic fields undergoes divergence or convergence thereby focussing of the beam is done.
• The electrons emitted from the source are accelerated by high potentials. The beam is made parallel by magnetic condenser lens. When the beam passes through the sample whose magnified image is needed, the beam carries the image of the sample.
• With the help of magnetic objective lens and magnetic projector lens system, the magnified image is obtained on the screen. These electron microscopes are being used in almost all branches of science.

[OR]

(b) Discuss the process of nuclear fission and its properties.
Answer:

• When uranium nucleus is bombarded with a neutron, it breaks up into two smaller nuclei of comparable masses with the release of energy.
• The process of breaking up of the nucleus of a heavier atom into two smaller nuclei with the release of a large amount of energy is called nuclear fission.
• The fission is accompanied by the release of neutrons. The energy that is released in the nuclear fission is of many orders of magnitude greater than the energy released in chemical reactions.
• Uranium undergoes fission reaction in 90 different ways. The most common fission reactions of
  
• Here Q is energy released during the decay of each uranium nuclei. When the slow neutron is absorbed by the uranium nuclei, the mass number increases by one and goes to an excited state. \(_{ 92 }^{ 236 }{ U }\) . But this excited state does not last longer than 10^-12s and decay into two daughter nuclei along with 2 or 3 neutrons. From each reaction, on an average, 2.5 neutrons are emitted.

Question 38.
(a) Transistor functions as a switch. Explain.
Answer:
The transistor in saturation and cut-off regions functions like an electronic switch that helps to. turn ON or OFF a given circuit by a small control signal.

Presence of dc source at the input (saturation region):
When a high input voltage (V. = +5V) is applied, the base current (I ) increases and in turn increases the collector current. The transistor will move into the saturation region (turned ON). The increase in collector current (I_c) increases the voltage drop across R_c .thereby lowering the output voltage, close to zero. The transistor acts like a closed switch and is equivalent to ON condition.

Absence of dc source at the input (cut-off region):
A low input voltage (V_in = OV), decreases the base current (I_B) and in turn decreases the collector current (I_c ). The transistor will move into the cut-off region (turned OFF). The decrease in collector current (I_c) decreases the drop across, thereby increasing the output voltage, dose to +5 V. The transistor acts as an open switch which is considered as the OFF condition.

It is manifested that, a high input gives a low output and a low input gives a high output. In addition, we can say that the output voltage is opposite to the applied input voltage. Therefore, a transistor can be used as an inverter in computer logic circuitry

[OR]

(b) What is modulation? Explain the types of modulation with necessary diagrams.
Answer:
Modulation: For long distance transmission, the low frequency baseband signal (input signal) is superimposed onto a high frequency radio signal by a process called modulation. There are 3 types of modulation based on which parameter is modified.
They are

1. Amplitude modulation,
2. Frequency modulation, and
3. Phase modulation.

1. Amplitude Modulation (AM): If the amplitude of the carrier signal is modified according to the instantaneous amplitude of the baseband signal, then it is called amplitude modulation. Here the frequency and the phase of the carrier signal remain constant. Amplitude modulation is used in radio and TV broadcasting.

The signal shown in figure
(a) is the message signal or baseband signal that carries information, figure
(b) shows the high-frequency carrier signal and figure
(c) gives the amplitude modulated signal. We can see clearly that the carrier wave is modified in proportion to the amplitude of the baseband signal.

(ii) Frequency Modulation (FM):
The frequency of the carrier signal is modified according to the instantaneous amplitude of the baseband signal in frequency modulation. Here the amplitude and the phase of the carrier signal remain constant. An increase in the amplitude of the ‘ baseband signal increases the frequency of the carrier signal and vice versa. This leads to compressions and rarefactions in the frequency spectrum of the modulated wave.

Louder signal leads to compressions and relatively weaker signals to rarefactions. When the amplitude of the baseband signal is zero in Figure (a), the frequency of the modulated signal is the same as the carrier signal. The frequency of the modulated wave increases when the amplitude of the baseband signal increases in the positive direction (A, C). The increase in amplitude in the negative half cycle (B, D) reduces the frequency of the modulated wave (Figure (c)).

(iii) Phase Modulation (PM)
The instantaneous amplitude of the baseband signal modifies the phase of the carrier signal keeping the amplitude and frequency constant is called phase modulation. This modulation is used to generate frequency modulated signals. It is similar to frequency modulation except that the phase of the carrier is varied instead of varying frequency.

The carrier phase changes according to increase or decrease in the amplitude of the baseband signal. When the modulating signal goes positive, the amount of phase lead increases with the amplitude of the modulating signal. Due to this, the carrier signal is compressed or its frequency is increased.

On the other hand, the negative half cycle of the baseband signal produces a phase lag in the carrier signal. This appears to have stretched the frequency of the carrier wave. Hence similar to frequency modulated wave, phase modulated wave also comprises of compressions and rarefactions. When the signal voltage is zero (A, C and E) the carrier frequency is unchanged.

Students can download 10th Social Science History Chapter 9 Freedom Struggle in Tamil Nadu Questions and Answers, Notes, Samacheer Kalvi 10th Social Science Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

Tamilnadu Samacheer Kalvi 10th Social Science Solutions History Chapter 9 Freedom Struggle in Tamil Nadu

Samacheer Kalvi 10th Social Science Freedom Struggle in Tamil Nadu Text Book Back Questions and Answers

I. Choose the correct answer

Question 1.
Who was the first President of the Madras Mahajana Sabha?
(a) T.M. Nair
(b) P. Rangaiah
(c) G. Subramaniam
(d) G.A. Natesan
Answer:
(b) P. Rangaiah

Question 2.
Where was the third session of the Indian National Congress held?
(a) Marina
(b) Mylapore
(c) Fort St. George
(d) Thousand Lights
Answer:
(d) Thousand Lights

Question 3.
Who said “Better bullock carts and freedom than a train deluxe with subjection”?
(a) Annie Besant
(b) M. Veeraraghavachari
(c) B.P. Wadia
(d) G.S. Arundale
Answer:
(a) Annie Besant

Question 4.
Which among the following was SILF’s official organ in English?
(a) Dravidian
(b) Andhra Prakasika
(c) Justice
(d) New India
Answer:
(c) Justice

Question 5.
Who among the following were Swarajists?
(a) S. Satyamurty
(b) Kastunrangar
(c) P. Subbarayan
(d) Periyar EVR
Answer:
(a) S. Satyamurty

Question 6.
Who set up the satyagraha camp in Udyavanam near Madras?
(a) Kamaraj
(b) Rajaji
(c) K. Santhanam
(d) T. Prakasam
Answer:
(d) T. Prakasam

Question 7.
Where was the anti-Hindi Conference held?
(a) Erode
(b) Madras
(c) Salem
(d) Madurai
Answer:
(c) Salem

Question 8.
Where did the congress volunteers clash with the military during Quit India Movement?
(a) Erode
(b) Madras
(c) Salem
(d) Madurai
Answer:
(d) Madurai

II. Fill in the blanks

1. ………………… was appointed the first Indian Judge of the Madras High Court.
2. The economic exploitation of India was exposed by ………………… through his writings.
3. Nilakanta Brahmachari started the secret society named …………………
4. The starting of trade unions in Madras was pioneered by …………………
5. The Dravidian Association Hostel for non-Brahmin students was established by …………………
6. ………………… formed the first Congress Ministry in Madras.
7. ………………… was the founder of the Madras branch of the Muslim League.
8. ………………… hoisted the national flag atop Fort St. George on 26 January 1932.

Answers:

1. T. Muthuswami
2. G. Subramaniam
3. Bharata Matha Society
4. B.P.Wadia
5. C. Natesanar
6. C. Rajaji
7. Yakub Hasan
8. Bashyam

III. Choose the correct statement

Question 1.
(i) Madras Native Association was founded in 1852.
(ii) Tamil nationalist periodical Swadesamitran was started in 1891.
(iii) The Madras Mahajana Sabha demanded conduct of civil services examinations only in India
(iv) V.S. Srinivasanar was an extremist.
(a) (i) and (ii) are correct
(b) (iii) is correct
(c) (iv) is correct
(d) All are correct
Answer:
(a) (i) and (ii) are correct

Question 2.
(i) EVR did not participate in the Non- Cooperation Movement.
(ii) Rajaji worked closely with Yakub Hasan of the Muslim League.
(iii) Workers did not participate in the Non- Cooperation Movement.
(iv) Toddy shops were not picketed in Tamil Nadu.
(a) (i) and (ii) are correct
(b) (i) and (iii) are correct
(c) (ii) is correct
(d) (i), (iii) and (iv) are correct
Answer:
(c) (ii) is correct

Question 3.
Assertion (A): The Justice Party opposed the Home Rule Movement.
Reason (R): The Justice Party feared that Home Rule would give the Brahmins more power.
(a) Both A and R are correct but R is not the correct explanation of A.
(b) A is correct but R is wrong
(c) Both A and R are wrong
(d) Both A and R are correct and R is the correct explanation of A.
Answer:
(d) Both A and R are correct and R is the correct explanation of A.

Question 4.
Assertion (A): EVR raised the issue of representation for non-Brahmins in legislature.
Reason (R): During the first Congress Ministry, Rajaji abolished sales tax.
(a) Both A and R are correct but R is not the correct explanation of A.
(b) A is correct but R is wrong.
(c) Both A and R are wrong.
(d) Both A and R are correct and R is the correct explanation of A.
Answer:
(b) A is correct but R is wrong.

IV. Match the following

Answers:
A. (iv)
B. (v)
C. (ii)
D. (iii)
E. (i)

V. Answer the following questions briefly

Question 1.
List out the contribution of the moderates.
Answer:
The primary contribution of the moderates lies in exposing the liberal claims of the British. They exposed how the British exploited India, and their hypocrisy in following democratic principles in England but imposing an unrepresentative government in colonies.

Question 2.
Write a note on the Tirunelveli Uprising.
Answer:

1. V.O Chidambaranar with Subramania Siva an organising the mill workers in Thoothukudi and Tirunelveli.
2. In 1908 he led a strike in the European owned coral mills. It coincided with the release of Bipin Chandra Pal.
3. In celebrate the release of Bipin Chandra Pal V.O.C and Subramania Siva organised a public meeting.
4. The two leaders were charged with sedition and sentenced to rigorous imprisonment.
5. The news of the arrest sparked riots in Tirunelveli leading to the burning down of the Police Station, Court Building and Municipal Office.
6. It led to the death of four people in police firing. V.O.C was treated harshly.

Question 3.
What is the contribution of Annie Besant to India’s freedom struggle?
Answer:
Annie Besant started the Home Rule League. She wrote two books and a pamphlet on self-government. Members of the movement played a key role in organising working classes through trade unions.

Question 4.
Mention the various measures introduced by the Justice Ministry.
Answer:
The Justice Ministry introduced “Various measures for the benefit of Non – Brahmins, They were

1. Reservation of appointments in local bodies and education institutions.
2. Establishment of Staff Selection Board which later became the Public Service Commission.
3. Enactment of Hindu Religious Endowment Act.
4. Madras State Aid to Industries Act.
5. Abolition of Devadasi system.
6. Allotment of waste Government lands (Poromboke) to the poor for housing.
7. Extension of primary education to the depressed classes through fee concessions, scholarships and mid – day meals.

Question 5.
Write briefly on EVR’s contribution to the constructive programme?
Answer:
E.V. Ramaswamy campaigned for the promotion and sale of khadi, opposed the consumption of liquor, and played a key role in the satyagraha for temple entry in Vaikom. Gandhi called him Vaikom Hero for his contribution against caste discrimination and agitation for temple entry.

Question 6.
What is Cheranmadevi Gurukulam controversy?
Answer:

1. To further the cause of national education a gurukulam was established in Cheranmadevi by V.V Subramanianar. It received funds from congress.
2. Students were discriminated on the basis of caste.
3. They were made to dine separately and the food served too was different.
4. The issue was brought to the notice of E.V.R who questioned and severely criticised it along with another leader Dr. RVaradarajulu.
5. The Cheranmadevi Gurukulam controversy and opposition to communal representation within the congress led to E.V.R (Periyar) to leave the Congress.

Question 7.
Why was anti-Hindi agitation popular?
Answer:
The anti-Hindi agitation was popular because Hindi was considered a form of Aryan and North Indian imposition which was detrimental to Tamil language and culture.

Question 8.
Outline the key incidents during the Quit India Movement in Tamil Nadu.
Answer:
On 8^th August 1942 Quit India resolution was passed. The entire congress leadership was arrested overnight.

1. At every railway station the policemen waited with a list of local leaders and arrested them when they got down.
2. Kamaraj who saw this on his return from Bombay conference slipped from police arrest. He then worked underground and organised the people during Quit India Movement.
3. All sections of society participated in the movement.
4. There were many instances of violence such as setting fire to post offices Vellore and Panapakkam.
5. Gutting of telegraph lines.
6. Congress volunteers clashed with the Military in Madurai.
7. Disrupting railway traffic trains derailed in Coimbatore.
8. There were police firings at Rajapalayam, Karaikudi and Devakottai.

These were some of the key incidents.

VI. Answer the questions given under each caption

Question 1.
Early Nationalist Movement in Tamil Nadu

(a) What were the objectives of Madras Native Association?
Answer:
The objective of Madras Native Association was to promote the interests of its members and reduction of taxes. It also protested against the government’s support to missionary activities.

(b) What led to the emergence of nationalist press in Tamil Nadu?
Answer:
The entire press opposed the appointment of the first South Indian judge of the Madras High Court in 1878. This led to a need of a nationalist press to express the Indian perspective. The Hindu was started in 1878 and soon became a vehicle for nationalist propaganda.

(c) What were the demands of Madras Mahajana Sabha?
Answer:
The demands of Madras Mahajana Sabha were to conduct civil services examinations simultaneously in England and India, abolition of India Council in London, reduction of taxes, and reduction of civil and military expenditure.

(d) Who were the early nationalist leaders in Tamil Nadu?
Answer:
Some early nationalists in Tamil Nadu were: V.S. Srinivasa Sastri, P.S. Sivasamy Iyer, V. Krishnasamy Iyer, T.R. Venkatrama Sastri, G.A. Natesan, T.M. Madhava Rao and S. Subramania Iyer.

Question 2.
Revolutionary Movement In Tamil Nadu:

(a) List a few revolutionaries in Tamil Nadu.
Answer:
M.P.T. Acharya, V.V. Subramanianar and T.S.S. Rajan were few of the revolutionaries in Tamil Nadu.

(b) Why did Subramania Bharati moved to Pondicherry?
Answer:
To avoid imprisonment, Subramania Bharati moved to Pondicherry.

(c) Name a few of the revolutionary literature.
Answer:
Few of the Revolutionary literature were India, Vijaya and Suryodayam.

(d) What did Vanchinathan do?
Answer:
Vanchinathan of Senkottai, influenced by Bharatha Matha Society, shot dead Robert W.D’E. Ashe collector of Tirunelveli in Maniyachi junction.

Question 3.
Non-Brahmin Movement

(a) Why was the South Indian Liberal Federation formed?
Answer:
The South Indian Liberal Federation was formed to promote the interests of non-Brahmins.

(b) What is the Non-Brahmin Manifesto?
Answer:
The Non-Brahmin Manifesto had objectives such as reservation of jobs for non-Brahmins in government service and seats in representative bodies. It opposed the Home Rule Movement and criticised Congress as a party of Brahmins.

(c) Why did EVR join the Non-Brahmin Movement?
Answer:
EVR joined the non-Brahmin movement because he felt the Congress was promoting the interests of Brahmins alone.

(d) What do you know about anti-Hindi agitation?
Answer:
A massive campaign was led by EVR against the introduction of Hindi as a compulsory subject in schools. The anti-Hindi agitation was popular because Hindi was considered a form of Aryan and North Indian imposition. EVR organized an anti-Hindi conference. More than ‘ 1200 protesters were arrested at a rally. The subject was later removed after protests.

VII. Answer in detail

Question 1.
Discuss the response to Swadeshi Movement in Tamil Nadu.
Answer:
The Swadeshi Movement made a deep impact in Tamil Nadu. The congress carried on Vigorous campaign for boycott of Foreign goods.

Prominent leaders who played a Key role:

V.O.Chidambaranar, V.Chakkaraiyar, Subramania Bharati and Surendranath Arya.

1. The extremist leader Bipin Chandrapal toured Madras and delivered lectures.
2. Inspired by his speech students and youths widely participated in the Swadeshi Movement.

Propagation of Swadeshi ideals:
Many journals were started to propagate Swadeshi ideals the prominent among them were swadesamitran and India.

Mobilisation of people:

1. Public meetings were organised in various parts of Tamil Nadu. Thousands of people attended it.
2. For the first time was used on the public platform.

Awakening and inculcating patriotic spirit:
Subramania Bharati’s patriotic songs were especially the most important in stirring the patriotic emotions of the people.

Question 2.
Examine the origin and growth of Non-Brahmin Movement in Tamil Nadu.
Answer:
As there was rapid growth of education in Madras Presidency, there was an increase in the number of educated non-Brahmins. They began to raise the issue of caste discrimination and unequal opportunities in employment and representation in elected bodies. The Congress also mainly consisted of Brahmins. The non-Brahmins then began to organise themselves into political organisations to protect their interests, such as the Madras Dravidian Association and the South Indian Liberal Federation. A non-Brahmin manifesto was also released.

Question 3.
Describe the role of Tamil Nadu in the Civil Disobedience Movement.
Answer:

1. Transformation of congress: In the 1920’s congress with Gandhi in leadership was transforming in to a broad based movement in Tamil Nadu.
2. The Madras session of the Indian National Congress in 1927 declared complete independence as its goal.
3. In the 1929 Pooma Swaraj was adopted as the goal at Lahore session of Congress.
4. In 1930 Gandhi launched the Civil Disobedience Movement by setting out on a salt satyagraha with a march to a Dandi.

Role of Tamil Nadu:

1. Tamil Nadu was in the forefront of the Civil Disobedience Movement.
2. In city of Madras shops were picketed and foreign goods boycotted.

Salt Satyagraha: Rajaji organised and led a Salt Satyagraha to Vedaranyam. The march started from Trichirapalli to Vedaranyam on 13th April 1930 and reached Vedaranyam in Thanjavur district on 28th April.

Special Song: Composed by Ramalinganar (Nammakkal Kavingnar) for the March.

Leaders who participated: T.S.S.Rajan, C.Swaminathar, Rukmani Lakshmipathi, Sardar Vedarathnam and K.Santhanam.

Agitations: The Satyagraha’s under the leadership of T.Prakasan and K.Nageswara Rao set up a camp at Udayavanani near Madras. Police arrested them that led to Hartal in Madras. Clashes with the police in Tiruvallikeni lasted for three hours on 27th April 1930 left three dead.

Response from the people:

1. Mill workers struck work across the province.
2. Women participated enthusiastically.
3. Volunteers attempted to offer Salt Satyagraha at Rameswaram, Thoothukudi, Uvari, Anjengo, Veppalodai, and Tharuvaikulam were stopped and arrested.

Important Event: Bhashyam popularly known as Arya, hoisted the national flag atop St. George Fort on 26th January 1932. Satyamurti, actively picketed shops selling foreign clothes, organised processions and distributed pamphlets.

Martyrdom of Tirupur Kumaran: On January 1932 a procession carrying national flags singing patriotic songs were brutally beaten up by police in Tirupur. Tirupur Kumaran fell dead holding the flag a loft. Thus civil Disobedience movement was one of the mass movements in Tamil Nadu.

VIII. Activity

Question 1.
Students can be asked to write a sentence or two about the important places of freedom struggle in Tamil Nadu.
Answer:
Important Places of freedom struggle in Tamil Nadu a sentence or two about each place.

Madras:

1. Thousands lights: Third session of Indian Nation Congress was held in 1887 with Badruddin Tyabji as president 362 members participated out of 607 were from Madras.
2. Thoothukudi: Swadesh ships plied from Thoothukudi to Colombo launched ’ by the Swadeshi steam Navigation company of V.O.Chidambaranar.
3. Tirunelveli: Mill workers led a strike under Swadeshi Movement.
4. Pondicherry: Haven for the revolutionists Maniyachi junction (Tirunelveli). Collector W.D’E. Ashe was shot dead by a revolutionary youth Vanchinathan.
5. Adayar (Madras): Home Rule Movement was started by Annie Besant in 1916.
6. Marina Beach: On 18th March 1919 Gandhi addressed a meeting on Marina Beach against ‘Black Act’ (Rowlatt Act).
7. Tiruchirapalli: Salt March started from here.
8. Vedaranyam: Salt march led by Rajaji ended by breaking salt law.
9. Thirupur: Martyrdom of Kumaran holding National Flag.
10. Madurai: Temple entry programme with Harijans in Meenakshi amman temple was organised.
11. Salem: Anti Hindi agitation.
12. Coimbatore: V.O. Chidambaranar made to pull oil press in the prison.

Question 2.
Role Play: Students can be divided into groups and asked to debate the -views of the Moderates, Extremists, Revolutionaries, Annie Besant’s supporters, Justice Party, and British Government.
Answer:
Characters:

1. British Government – Police forces, and Governor
2. Revolutionaries – Arbindo Gosh, Vanchinathan Bharathi (Songs)
3. Justice party – E.V.R (Periyar)
4. Moderates – V.O.Chidambaranar, Subramaniya siva, Rajaji, Satyamurti
5. Extremist – Bipin Chandra Pal

Debate Between

1. Justice party – EVR and Rajaji on the issue of Hindi as a compulsory language at schools and temple entry incident.
2. Extremists and moderates – Prochangers and No changers.
3. British Government and Revolutionaries.

The class can be divided into three groups each to represent (3 + 3)

2 persons can be selected for each group to represent the character. Character allotment can be given by the teacher concerned and the students are requested to prepare the dialogues.

Points for Debate can be selected from the events (in Tamil Nadu as given in the lesson) Swadeshi Movement, Anti Hindi Agitation, Vedaranyam Salt March, Vaikom Satyagraha Quit India Movement, Non – Cooperation Movement.

Samacheer Kalvi 10th Social Science Freedom Struggle in Tamil Nadu Additional Important Questions and Answers

I. Choose the correct Answer

Question 1.
Madras Native Association was formed in the year:
(a) 1825
(b) 1806
(c) 1852
(d) 1860
Answer:
(c) 1852

Question 2.
In 1908 Bharathiar organized a huge public meeting to celebrate ……………
(a) Swaraj day
(b) Birthday
(c) Republic day
Answer:
(a) Swaraj day

Question 3.
One of the prominent moderate who attended the meeting in Madras before the formation of Indian National Congress:
(a) Gokhale
(b) Bharathiyar
(c) Aurobindo Gosh
(d) Dadabhai Naoroji
Answer:
(d) Dadabhai Naoroji

Question 4.
The person who is called Kappalotiya Tamizhan ……………..
(a) V.O.C
(b) Bharathiyar
(c) Gandhiji
Answer:
(a) V.O.C

Question 5.
The extremist leaders …………………. inspired many youths to join the Swadeshi movement in Madras.
(a) Aurobindo Gosh
(b) Nilakanta Brahmachari
(c) Bipin Chandra Pal
(d) Mrs. Annie Besant
Answer:
(c) Bipin Chandra Pal

Question 6.
Gandhi’s ‘Do or Die’ slogan came during which movement?
(a) Non-cooperation Movement
(b) Quit India Movement
(c) Civil Disobedience Movement
(d) Khilafat Movement
Answer:
(b) Quit India Movement

Question 7.
…………………. championed the cause of ‘Criminal Tribes’ of Tamil Nadu.
(a) Yakub Hasan
(b) V.V.Somayajulu
(c) George Joseph
(d) Maulana Shaukat Ali
Answer:
(c) George Joseph

Question 8.
The Swadeshi Steam Navigation Company was launched at ………..
(a) Colombo
(b) Madras
(c) Vellore
(d) Thoothukudi
Answer:
(d) Thoothukudi

Question 9.
…………………. was one of the epicenter of Khilafat agitation.
(a) Chennai
(b) Vaniyambadi
(c) Arakkonam
(d) Coimbatore
Answer:
(b) Vaniyambadi

Question 10.
Who gave the slogan “A war is ahead sans sword, sans bloodshed…”?
(a) T. Prakasham
(b) Namakkal V Ramalingam
(c) N. M. R. Subbaraman
(d) K. Kamraj
Answer:
(b) Namakkal V Ramalingam

Question 11.
…………………. arrived in Madras on 18th February 1929 greeted with hartals, demonstrations etc.
(a) Torture commission
(b) Cripps mission
(c) Simon commission
(d) Prince of Wales
Answer:
(c) Simon commission

Question 12.
In the elections held in …………………. the Swarajists won the majority seats in Madras.
(a) 1924
(b) 1926
(c) 1927
(d) 1906
Answer:
(b) 1926

Question 13.
At Vedaranyam …………………. broke the salt law by picking up salt along with 12 volunteers.
(a) T. Prakasam
(b) K. Nageswara Rao
(c) K. Kamaraj
(d) C. Rajaji
Answer:
(d) C. Rajaji

Question 14.
E.V.R. left the congress and started the …………………. movement.
(a) Swadeshi
(b) Quit India
(c) Self Respect
(d) Civil Disobedience
Answer:
(c) Self Respect

Question 15.
In Tamil Nadu …………………. were led by S. Srinivasanar and S.Satyamurthi.
(a) Swarajists
(b) Satyagrahis
(c) Mill workers
(d) Zamindars
Answer:
(a) Swarajists

II. Fill in the blanks

1. ……………….. contributed much to the development of education and amelioration of the depressed classes.
2. Introduction, of ……………….. helped the educated Indian middle class to fought against colonial rule.
3. Social disability hindered the society imposed by obnoxious ………………..
4. Madras Native Association was ceased to exist by ………………..
5. The newspaper ……………….. was started in 1878 became the vehicle of nationalist propaganda.
6. Swadesamitran periodical became daily newspaper in ………………..
7. Many of the demands of Madras Mahajana sabha were adopted later by the ………………..
8. The early nationalists believed in ……………….. methods.
9. The early nationalists were came to be knowrr as ………………..
10. Out of a total of 72 delegates who attended the first session of Indian National Congress ……………….. members were from Madras.
11. ……………….. through his writings advanced the cause of Nationalism.
12. ……………….. was previously called as ‘Makkis Garden’ where the third session of Indian National congress was held.
13. ……………….. partriotic songs arouse the patriotic emotions of the people.
14. V.O.Chidambaranar launched ……………….. in pursuance of Swadeshi at Thoothukudi.
15. The Swadeshi ships plied between ………………..
16. ……………….. and ……………….. were the name of the two ships purchased by V.O.Chidambaranar.
17. V.O.C was treated harshly in prison and was made to pull the ………………..
18. To avoid imprisonment Subramanya Bharati moved to ………………..
19. Revolutionaries in Tamil Nadu were trained in revolutionary activities at ………………..
20. Revolutionary radical papers and Bharati’s poems were banned as ………………..
21. Revolutionary activities continued till the out break of ………………..
22. The revolutionary activities were intensified with arrival ……………….. and ……………….. in 1910.
23. ……………….. of senkottai was influenced by the Bharata Matha society.
24. ……………….. failed to inspire and mobilize the people despite their patriotism.
25. The objective of the Bharata Matha Society was to kindle the ……………….. fewer among the people by killing British officials.
26. At ……………….. the collector of Tirunelveli Robert W.D’E. Ashe was shot dead.
27. Mrs. Annie Besant started the newspapers ……………….. and ……………….. to carry forward her agenda of Home rule movement.
28. Under ……………….. Annie Besant was asked to pay hefty amount as security.
29. ……………….. was elected as the president of the congress session of 1917.
30. The differences between the two Non-Brahmin leaders ……………….. and ……………….. was solved by CNatesanar.
31. The ……………….. demanded communal representation.
32. The ……………….. provided reservation of seats to Non-Brahmins.
33. After the 1923 elections ……………….. of the Justice party formed the ministry.
34. The staff selection Board established by the Justice party later became the ………………..
35. The Rowlat Act was named after ……………….. who headed the committee.
36. On 18 march 1919 ……………….. addressed a meeting on marina beach to protest against Rowlet Act.
37. To further the cause of national education a gurukulam was started at ………………..
38. When Rajaji formed the ministry in 1937 the status of James Neill finally moved to ………………..
39. For the salt march to Vedaranyam led by C.Rajaji a special song was composed by ………………..
40. ……………….. was the forst woman to pay penalty for violation of salt laws.
41. ……………….. fell dead holding the national flag in a procession organised under Civil Disobedience Movement.
42. Tirupur Kumaran was hailed as ………………..
43. The ……………….. was trounced in 1937 elections to the Madras province.
44. ……………….. Act was passed in 1939 for the removal of the civil and social disabilities against the ‘depressed classes’.
45. The Governor of Madras who took over the administration removed ……………….. as compulsory subject after the resignation of the congress ministry.

Answers:

1. Christian Missionaries
2. Western Education
3. Caste, system
4. 1862
5. The Hindu
6. 1899
7. Indian National Congress
8. Constitutional
9. Moderates
10. 22
11. G. Subramaniam
12. Thousand lights
13. Subramanya Bharati
14. Swadeshi Steam Navigation Company
15. Thoothukudi and Colombo
16. Gallia, Lavo
17. heavy oil press
18. Pondicherry
19. India House in London and in Paris
20. Seditious Literature
21. First World War
22. Aurobindo Ghosh, V.V.Subramanianar
23. Vanchinathan
24. Young revolutionaries
25. Patriotic
26. Maniyachi junction
27. India and Commonweal
28. Press Act of 1910
29. Annie Besant
30. Dr. T.M.Nair, and P.Thyagarayar
31. Justice party
32. Act of 1919
33. Raja of Panagal
34. Public Service Commission
35. Sir Sydney Rowlatt
36. Gandhi
37. Cheranmadevi
38. Madras Museum
39. Namakkal V. Ramalinganar
40. Rukmani Lakshmipathi
41. Tirupur Kumaran
42. Kodikatha Kumaran
43. Justice party
44. The Temple Entry Authorisation and Indemnity
45. Hindi

III. Choose the correct statement

Question 1.
(i) Madras Native Association, Madras Mahajan Sabha and the Nationalist press led to the growth of Nationalism in Tamil Nadu.
(ii) Madras Native Association primarily consisted merchants.
(iii) Madras Native Association focussed on reduction in taxation.
(iv) It led to the formation of congress.
(a) (i), (ii) and (iii) are correct
(b) (ii), (iii) and (iv) are correct
(c) (ii) and (iv) are correct
(d) (i) and (iii) are correct
Answer:
(a) (i), (ii) and (iii) are correct

Question 2.
(i) The educated middle class did not show interest in public affairs.
(ii) The appointment of first Indian Judge to the Madras High court was Criticized by the press.
(iii) The moderates exposed the liberal claims of the British.
(iv) Boycott of foreign goods was not propagated by the congress.
(a) (i) and (ii) are correct
(b) (ii) and (iii) are correct
(c) (iii) and (iv) are correct
(d) (i) and (iv) are correct
Answer:
(b) (ii) and (iii) are correct

Question 3.
(i) In 1908 V.O.C led a strike in the European owned Coral Mills.
(ii) V.O.C was given a draconian sentence of two life imprisonments.
(iii) Students and youths did not participated in the Swadeshi Movement.
(iv) Extremists and revolutionaries were not suppressed by the British with . an iron hand.
(a) (i) and (iii) are correct
(b) (iii) and (iv) are correct
(c) (ii) and (iii) are correct
(d) (i) and (ii) are correct
Answer:
(d) (i) and (ii) are correct

Question 4.
Assertion (A): When the National movement was in ebb, Annie Besant proposed the Home Rule Movement.
Reason (R): Home Rule Demanded a nominal allegience to British crown.
(a) A is correct but R is wrong
(b) Both A and R are correct and R is the correct explanation of A.
(c) Both A and R are wrong
(d) Both A and R are correct R is not the correct explanation of A.
Answer:
(b) Both A and R are correct and R is the correct explanation of A.

Question 5.
Assertion (A): Kamaraj gave the police the slip and got down at Arakkonam worked underground to organise people during quit India movement.
Reason (R): While returning from Bombay he saw the police at every railway station to arrest the local leaders when they got down.
(a) Both A and R are correct R explains A.
(b) Both A and R are wrong
(c) A is correct R is wrong
(d) Both A and R are correct but R is not the correct explanation of A.
Answer:
(a) Both A and R are correct R explains A.

Question 6.
Assertion (A): V.O.C and Subramania Siva were charged with sedition and sentenced to rigorous imprisonment.
Reason (R): Both the leaders organised a public meeting to celebrate the release of Bipin Chandrapal.
(a) A is correct R is wrong
(b) A is wrong R is correct
(c) Both A and R are correct R explains A
(d) Both A and R are correct R does not explains A.
Answer:
(c) Both A and R are correct R explains A

Question 7.
Assertion (A): Kumaraswamy of Thiruppur is hailed as Kodikatha Kumaran.
Reason (R): At the procession of agitation as a part of civil obedience he fell dead holding the national flag aloft.
(a) A ands R are correct R is not explaining A
(b) A and R are wrong
(c) A is wrong R is correct
(d) Both A and R correct R explains A.
Answer:
(d) Both A and R correct R explains A.

IV. Match the following

Question 1.
Match the Column I with Column II.

Answer:
A. (ii)
B. (v)
C. (iv)
D. (i)
E. (iii)

Question 2.
Match the Column I with Column II.

Answer:
A. (ii)
B. (iv)
C. (v)
D. (i)
E. (iii)

Question 3.
Match the Column I with Column II.

Answer:
A. (v)
B. (iv)
C. (iii)
D. (i)
E. (ii)

V. Answer the question briefly

Question 1.
What do you know about Tirupur Kumaram?
Answer:

• Tirupur Kumaran was bom in Chennimalai, Erode district in Tamil Nadu.
• He was a great revolutionary.
• He participated in the march against the ban on the national flag and he died from injuries sustained from a police assault.
• Kumaran died holding the flag of the Indian Nationalists.
• Kumaran is revered as a martyr in Tamil Nadu and is known by the epithet Kodi Kaththa Kumaran.

Question 2.
Name the Newspapers and journals started by Indians to express the Indian perspective.
Answer:
To express the perspective of the Indians “The Hindu, Swadesamitran, Indian patriot, South Indian mail, Madras standard, vijaya’ India, Suryodayam, Desabhimani” were some of the newspapers started and they became the vehicle of nationalist propaganda.

Question 3.
Give an account on Vanchinathan’s role in the struggle for freedom.
Answer:

1. Vanchinathan was under the service of the state of Travancore.
2. The activities of the extremists greatly alarmed the British.
3. The collector Ashe, shot down and killed four extremists in Tirunelveli.
4. So Vanchinathan wanted to take revenge against the collector.
5. He secretly went to Maniyachi Railway Station and shot dead Ashe on 17th June 1911 and he himself committed suicide.

Question 4.
Name of the books written by Annie Besant.
Answer:
Annie Besant wrote two books namely.

1. How India wrought for freedom and
2. “India” – A nation and a pamphlet on self-Govemment.

Question 5.
Give an account on V.O.C role in the stuggle for freedom.
Answer:

• In 1907 V.O.C attended the congress sessions held at Surat.
• He followed the militant leader Bala Gangadhar Tilak and preached his philosophy.
• He charged with sedition he was sentenced to forty years of imprisonment.

Question 6.
Write a short note on south Indian Liberal Federation (SILF).
Answer:
The Non-Brahmins organised themselves into political organisation to protect their interests. On 20th November a meeting of about thirty Non -Brahmins was held under the leadership of Dr.T.M.Nair P.Thiyagarayar and C.Natesanar at victoria public hall chennai.. The South Indian Liberal Federation (SILF) was founded to promote the interests of Non-Brahmins. It later came to be known as ‘Justice Party’.

Question 7.
How was the freedom struggle in Tamil Nadu unique?
Answer:
The freedom struggle in Tamil Nadu was unique because from the beginning it was not only ‘ a struggle for independence from the English rule but also a struggle for independence from the social disability imposed by the obnoxious caste system.

Question 8.
When and where the meeting Rowlatt Sathyagraha held? Who addressed it?
Answer:
On 18th March 1919 a meeting was held on Marina Beach and Gandhi addressed the meeting. Later madras Satyagraha sabha was formed.

Question 9.
Throw light on the beginning of the nationalist press in Tamil Nadu.
Answer:
When it was realised that press was essential to express the Indian perspective, people like G. Subramaniam, M. Veeraraghavachari and four other friends together started a newspaper The Hindu in 1878. Soon it became the vehicle of nationalist propaganda. G Subramaniam also started a Tamil nationalist periodical Swadesamitran in 1891 which became a daily in 1899. The founding of The Hindu and Swadesamitran provided encouragement to the starting of other native newspapers such as Indian Patriot, South Indian Mail, Madras Standard, Desabhimani, Vijaya, Suryodayam, and India.

Question 10.
Describe briefly the Non-cooperation Movement in Tamil Nadu.
Answer:
Tamil Nadu was very active during the Non-cooperation Movement under the leadership of C Rajagopalachari and E V Ramaswamy. Rajaji worked closely with Yakub Hasan, the founder of the Madras branch of the Muslim League. As a result, the Hindus and Muslims cooperated closely during the movement in Tamil Nadu. A Congress volunteer corps of about 1000 members was set up to distribute pamphlets, carry flags during processions and to maintain order in the meetings.

VI. Answer all the questions Given under each caption

Question 1.
Salt march to vedaranyam

(a) What was in forefront of the civil disobedience movement in Tamil Nadu?
Answer:
Demonstrations, hartals, staging of Swadeshi dramas and songs were the order of the day both in rural and urban areas of Tamil Nadu.

(b) How was the movement in Madras city?
Answer:
In the city of Madras as a part of civil Disobedience movement shops were picketed and foreign goods were.boycotted.

(c) Who organised and led the Salt Satyagraha March to Vedaranyam?
Answer:
Rajaji organised and led the Salt Satyagraha March ro Vedaranyam.

(d) From where and when does the march started and reached Vedaranyam?
Answer:
The march started from Trichirapalli on 13th April 1930 and reached Vedaranyam in (Tanjore district) on 28th April.

Question 2.
Swarajists-Justicites Rivalry
(a) Who were ‘no-changers’? Who were ‘pro-changers’?
Answer:
‘No-changers’ wanted to continue the boycott of the councils and ‘pro-changers’ wanted to ’ contest the elections for the councils.

(b) What did Rajaji oppose? Name two persons who supported him.
Answer:
Rajaji opposed the council entry. The two persons who supported him were Kasturi Ranga Iyengar and M. A. Ansari.

(c) Who formed Swaraj Party?
Answer:
Chittaranjan Das and Motilal Nehru together formed the Swaraj Party.

(d) Who led the Swarajists in Tamil Nadu?
Answer:
S. Srinivasa Iyengar and S. Satyamurthi led the Swarajists in Tamil Nadu.

Question 3.
Non-cooperation Movement in Tamil nadu

(a) Name the leaders provided leadership during non-cooperation movement in Tamil Nadu.
Answer:
E.V.Ramaswamy (Periyar) and C.Rajaji provided the leadership for non – cooperation movement.

(b) Who was the founder of the Madras branch of the Muslim League?
Answer:
Yakub Hasan was the founder of the Madras branch of the Muslim League.

(c) What was set up as a part of Non-cooperation movement?
Answer:
A Congress volunteer corps was set up a part of Non – cooperation movement.

(d) How did these volunteers assist?
Answer:
The volunteers corps distributed pamphelts, carry flags during processions and to maintain order in the meetings and also in picketing of liquor shops.

Question 4.
No tax – Campaigns and Temperance Movement

(a) Where did the No-tax campaigns take place?
Answer:
A no-tax campaign took place in Thanjavur.

(b) How did the people show their protest?
Answer:
Councils, schools and courts and foreign goods were boycotted and a number of workers’ strikes took place all over.

(c) What was one of the important aspects of the movement in Tamil Nadu?
Answer:
One of the important aspects of the movement in Tamil Nadu was the ‘Temperance Movement or Movement against liquor’.

(d) What was the Act for which the communities agitated?
Answer:
The communities agitated against the criminal Tribes Act.

VII. Answer In detail

Question 1.
Explain the contribution of Madras Mahajana Sabha.
Answer:
Madras Mahajana Sabha:

1. It was established by M. Veeraraghavachari, P. Anandacharlu, P. Rangaiah.
2. P. Rangaiah Naidu was elected the first president of the Sabha.

The contributions of Madras Mahajana Sabha:

1. The Madras Mahajana Sabha has contributed a lot for our national freedom.
2. The Sabha voiced out the fundamental right of our country men.
3. It had developed very close relationship with the Indian National Congress since 1920.
4. In 1930, the Sabha organised the Salt Sathyagraha Movement in Madras George Town. Esplanade the high court and beach areas. The members were attacked savagely by the British police.
5. When the British government banned the congress party. Madras Mahajana Sabha conducted numerous exhibition and Swadesh exhibition.
6. These exhibition instigated patriotic feelings in the hearts of our country men.

Question 2.
What were the scenario of Tamil Nadu during the Quit India movement?
Answer:

1. On 8^th August 1942 Quit India Resolution was passed and Gandhi gave the slogan ‘Do or Die’.
2. It was an undying mass movement.
3. K. Kamaraj worked underground and organised people during the quit India movement.
4. The movement was wide spread in Tamil Nadu.
5. All section of society participated in this movement.
6. There were large number of workers strike such as strikes in Bukingham and camatic Mills, Madras Port Trust, Madras, Corporation and Madras Tramway.
7. Telegraph and Telephone lines were cut and public buildings were burnt at Vellore and Panapakkam.
8. The airport in Sulur was attacked and trains derailed in Coimbatore.
9. Congress volunteers clashed with the military in Madurai.
10. There were police firings at Rajapalayam Karaikudi and Devakottai.
11. Many young men and women also joined Indian National Army.
12. Students of various colleges took active part in the protests.
13. The Quit India Movement was suppressed by the British with brutal force.

Question 3.
Under what circumstances did E. V. R. leave the Congress?
Or
What was Cheranmadevi Gurukulam controversy? How did it lead E. V. R. to leave the Congress?
Answer:
(i) E. V. Ramaswamy, popularly known as E. V. R. played an active role in Tamil Nadu
during the freedom struggle of India. But he was not satisfied with the Congress because he felt that it was promoting the interests of the Brahmins alone.

(ii) To further the cause of national education, a Gurukulam was established in Cheranmadevi by V. V. S. Iyer. It received funds from the Congress. However, students were discriminated on the basis of caste.

(iii) Brahmin and non-Brahmin students were made to dine separately and the food served too was different. The issue was brought to the notice of E. V. R. in 1925 who questioned the practice and severely criticized it along with another leader, Dr. P. Varadarajulu.

(iv) In Kanchipuram Conference of the Tamil Nadu Congress Committee held on 21 November 1925, he raised the issue of representation for non-Brahmins in the legislature. But his efforts to achieve this since 1920 had met with failure.

(v) When the resolution was defeated, E. V. R. left the Conference along with other non-Brahmin leaders who met separately. Soon he left the Congress and started the Self-respect Movement. Thus, the Cheranmadevi Gurukulam controversy and opposition to communal rengress led E. V. R. leave the Congress.

Students can Download Tamil Nadu 12th Commerce Model Question Paper 2 English Medium Pdf, Tamil Nadu 12th Commerce Model Question Papers helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

TN State Board 12th Commerce Model Question Paper 2 English Medium

Instructions:

1. The question paper comprises of four parts.
2. You are to attempt all the parts. An internal choice of questions is provided wherever applicable.
3. All questions of Part I, II. III and IV are to be attempted separately.
4. Question numbers 1 to 20 in Part I are Multiple Choice Questions of one mark each. These are to be answered by choosing the most suitable answer from the given four alternatives and writing the option code and the corresponding answer.
5. Question numbers 21 to 30 in Part II are two-mark questions. These are to be answered in about 50 words.
6. Question numbers 31 to 40 in Part III are three-mark questions. These are to be answered in about 150 words.
7. Question numbers 41 to 47 in Part IV are five-mark questions. These are to be answered in about 250 words. Draw diagrams wherever necessary.

Time: 3 Hours
Max Marks: 90

Part -I

Choose the correct answer. Answer all the questions: [20 x 1 = 20]

Question 1.
How many times security can be sold in a secondary market?
(a) Only one time
(b) Two times
(c) Three times
(d) Multiple times
Answer:
(d) Multiple times

Question 2.
Debt Instruments are issued by Corporate Houses are raising short-term financial resources
from the money market are called ………………
(a) Treasury Bills
(b) Commercial Paper
(c) Certificate of Deposit
(d) Government Securities
Answer:
(b) Commercial Paper

Question 3.
The market for buying and selling of Commercial Bills of Exchange is known as a ……………
(a) Commercial Paper Market
(b) Treasury Bill Market
(c) Commercial Bill Market
(d) Capital Market
Answer:
(c) Commercial Bill Market

Question 4.
A bull operator believes in …………….
(a) Increase in Prices
(b) Decrease in Prices
(c) Stability in Prices
(d) No change in Prices
Answer:
(a) Increase in Prices

Question 5
means the price at which securities are bought and sold are recorded and made public…………….
(a) Market Quotations
(b) Trade Quotations
(c) Business Quotations
(d) Buyers Quotations
Answer:
(a) Market Quotations

Question 6.
Trading is dematerialized shares commenced on the NSE is ……………….
(a) January 1996
(b) June 1998
(c) December 1996
(d) December 1998.
Answer:
(c) December 1996

Question 7.
Transfer is an source of recruitment……………
(a) Internal
(b) External
(c) Outsourcing
(d) None of the above
Answer:
(a) Internal

Question 8.
Which of the following orders is followed in a typical selection process.
(а) Application form test and or interview, reference check and physical examination
(b) Application form test and or interview, reference check, and physical examination
(c) Reference check, application form, test and interview and physical examination
(d) Physical examination test and interview application term and reference check
Answer:
(b) Application form test and or interview, reference check, and physical examination

Question 9
…………….. is useful to prevent skill obsolescence of employees.
(a) Training
(b) Job Analysis
(c) Selection
(d) Recruitment
Answer:
(a) Training

Question 10.
Which one is the example of Intangible product?
(a) Education
(b) Mobiles
(c) Garments
(d) Vehicles
Answer:
(a) Education

Question 11.
A company’s products and prices is visually represented by ……………
(a) Shopping Cart
(b) Web portal
(c) Electronic catalogue
(d) Revenue model
Answer:
(c) Electronic catalogue

Question 12.
………….. of every year is declared as a consumer protection Day to educate the public about their rights and responsibilities.
(a) August 15
(b) April 15
(c) March 15
(d) September 15
Answer:
(c) March 15

Question 13.
It is the responsibility of a consumer that he must obtain ……………. as a proof for the purchase of goods.
(a) Cash receipt
(b) Warranty card
(c) Invoice
(d) All of these
Answer:
(c) Invoice

Question 14.
The District Forum can entertain complaints where the value of goods or services and the compensation if any claimed is less than …………….
(a) Below ₹ 10,00,000
(b) Below ₹ 20,00,000
(c) Below ₹ 40,00,000
(d) Below ₹ 50,00,000
Answer:
(b) Below ₹ 20,00,000

Question 15.
……………. is a stipulation which is collateral to main purpose of contract.
(a) Warranty
(b) Condition
(c) Right
(d) Agreement
Answer:
(a) Warranty

Question 16.
When crossing restrict further negotiation ……………
(a) Not negotiable crossing
(b) General Crossing
(c) A/c payee crossing
(d) Special crossing
Answer:
(a) Not negotiable crossing

Question 17.
Which of the below is a commercial function?
(a) Accounting
(b) Coordination
(c) Discovery of idea
(d) Planning
Answer:
(a) Accounting

Question 18.
Poultry, Flowers, Fruits etc are called allied products of entrepreneur.
(a) Corporate
(b) Retail
(c) Trading
(d) Agricultural
Answer:
(d) Agricultural

Question 19.
…………… has to include the mechanism for managing venture in the project report.
(a) Banker
(b) Government
(c) Lending Institutions
(d) Entrepreneur
Answer:
(d) Entrepreneur

Question 20.
Specify the type of resolution to be passed to choose the location of Registered Office of the company within the town or village or city.
(a) Ordinary
(b) Special
(c) Either Ordinary or Special
(d) Board
Answer:
(d) Board

Part – II

Answer any seven in which Question No.30 is compulsory. [7 x 2 = 14]

Question 21.
How do you co-ordinate your class room with peace?
Answer:
All the activities are divided groupwise or sectionwise under organising function. Now, such grouped activities are co-ordinated towards the accomplishment of objectives of a classroom. With the function of co-ordination the classroom must be peaceful and calm.

Question 22.
What are the instruments of Money Market?
Answer:

• Treasury Bills in the Treasury Market
• Money at Call and Short Notice in the Call Loan Market
• Commercial Bills and Promissory Notes in the Bill Market

Now in addition to the above, the following new instruments come into existence:

• Commercial Papers
• Certificate of Deposits
• Inter-Bank participation Certificates
• Repo Instruments

Question 23.
What are the types of Speculators?
Answer:
Speculators in a stock market are of different types. They are named on the basis of animals behaviour. They are

• Bull
• Bear
• Stag
• Lame duck

Question 24.
Mention the headquarters of SEBI.
Answer:
SEBI has its headquarters at the business district of BandraKurla Complex in Mumbai, and has Northern, Eastern, Southern and Western Regional Offices in New Delhi,. Kolkata, Chennai and Ahmedabad, respectively.

Question 25.
What is Role Play?
Answer:
Under this method trainees are explained the situation and assigned roles. They have to act out the roles assigned to them without any rehearsal.

Question 26.
What is meant by Regulated Market?
Answer:
Very Short Period Market: Markets which deal in perishable goods like, fruits, milk, vegetables etc., are called as very short period market.

Question 27.
What is Social Marketing?
Answer:
Social marketing is a new marketing tool. It is the systematic application of marketing philosophy and techniques to achieve specific behavioural goals which ensure social good. For example- not to smoke in public areas.

Question 28.
What is mixed Economy?
Answer:
Mixed economy is a combination of both state owned and private sector ownership.

Question 29.
What is a Contingent Goods?
Answer:
Contingent goods are the goods, the acquisition of which by the seller depends upon a . contingency (an event which may or may not happen). Contingent goods are a part of future goods.

Question 30.
Define Intrapreneur.
Answer:
Intrapreneur is one who thinks and acts like an entrepreneur for the firm’s development during the course of employment in an organisation.

Part – III

Answer any seven in which question No. 40 is compulsory. [7 x 3 = 21]

Question 31.
State the importance of Motivation.
Answer:
The goals are achieved with the help of motivation. Motivation includes increasing the speed of performance of a work and developing a willingness on the part of workers. This is done by a resourceful leader. The workers expect, favourable climate conditions to work, fair treatment, monetary or non-monetary incentive, effective communication and gentleman approach.

Question 32.
Write a note on National Clearance and Depository System (NCDS).
Answer:
Under the scripless trading system, settlement of transactions relating to securities takes place through a book entry. The entire scripless trading system comprises the following three segments:

• National Trade Comparison and Reporting System which prescribes the terms and conditions of contract for the securities market.
• National Clearing System which aims at determining the net cash and stock liability of each broker on a settlement date.
• National Depository System which arranges to provide for the transfer of ownership of securities in exchange on payment by book entry on electronic ledgers without any physical movement of transfer deed.

Question 33.
What is the power of SEBI under securities Contract Act?
Answer:

• For effective regulation of stock exchange, the Ministry of Finance issued a Notification on 13 September, 1994 delegating several of its powers under the Securities Contracts (Regulations) Act to SEBI.
• SEBI is also empowered by the Finance Ministry to nominate three members on the Governing Body of every stock exchange.

Question 34.
What are the features of internal source of recruitment?
Answer:
The main features of internal source of recruitment are:

• Quick process.
• Cheaper than the external recruitment process.
• Works as a tool of motivation for the staff.
• The company’s choice is limited to existing employees of the company.

Question 35.
Why Customer support is needed to Market?
Answer:
Customer or the consumer is the king and is considered to be a guest to your shop. Without the customer there is no business. To develop the market the number of customer is to be increased. So customer support is necessary to increase the sales and gain more profit.

Question 36.
What is the role of Government in Consumer Protection?
Answer:
Since most of consumers including academically educated are illiterate about their rights and hence passive. Government should assure an active role in safeguarding the consumers. Government both the central and the state have brought out a number of legislations to protect the interest of consumers across the country. Law enforcement authorities should see that penal clause is not mere paper jaws-they should sting the offenders mercilessly.

Question 37.
What are the functions of the GST Council?
Answer:
The functions of GST Council:

• The GST council can recommend to the Central and State Government on issues relating to GST.
• The Goods and Services that may be subjected to or exempted from the Goods and Services Tax.
• Model GST laws, principles of levy are framed by the GST council.
• The rates including floor rates with bands of Goods and Services Tax.

Question 38.
Discuss the two different types of Crossing.
Answer:
(i) General Crossing
(ii) Special Crossing

• General Crossing: “Where a cheque bears across its face an addition of the words “ an company” or any abbreviation there of, between to parallel transverse lines or of two parallel transverse line simply either with or without the words “Not negotiable” that addition shall be deemed a crossing and the cheque shall be deemed to be crossed generally”.
• Special Crossing: “ Where a cheque bears across its face an addition of the name of a banker with or without the words “Not Negotiable”, that addition shall be deemed a crossing and the cheque shall be deemed to be crossed specially and to be crossed to that banker”.

Question 39.
How does a professional entrepreneur operate?
Answer:
Professional entrepreneur is one who is having a rich expertise in starting a venture but lack interest in continuing the venture as a manager or as a owner. He/she simply sells out the venture started by him to someone else after its successful take-off.

Question 40.
What resolution is requires special notice?
Answer:
There are certain matters specified in the Companies Act, 2013 which may be discussed at a general meeting only if a special notice is given at least 14 days before the meeting. The intention to propose any resolution must be notified to the company. The following matters require special notice before they are discussed in the meeting:-

• To appoint an auditor, a person other than a retiring auditor
• To provide expressly that a retiring Auditor shall not be reappointed
• To remove a director before the expiry of his period of office
• To appoint a director in the place of a director so removed

Part – IV

Answer all the following questions. [7 x 5 = 35]

Question 41.
(a) Discuss the various types of Financial markets?
Answer:
Financial assets can be classified differently under different circumstances. One such classification is:
(i) Marketable assets
(ii) Non-marketable assets
(i) Marketable Assets: Marketable assets are those which can be easily transferred from one person to another without much hindrance. Example: Shares of Listed Companies, Government Securities, Bonds of Public Sector Undertakings etc.

(ii) Non-Marketable Assets: On the other hand, if the assets cannot be transferred easily, they come under this category. Example: Bank Deposits, Provident Funds, Pension Funds, National Savings Certificates, Insurance Policies etc.

[OR]

(b) Discuss the importance of Recruitment.
Answer:
Recruitment is the process of having the right person, in the right place, at the right time. It is crucial to organisational performance. Recruitment is the first step in an organisation’s Human Resource Planning. It fulfills the organisation’s need of a set of competitive, motivated and flexible employees who work towards achieving the organisation’s objectives.

Competent Human Resources at the right positions are crucial for the organisation and constitute core competency. Recruitment helps in creating a pool of prospective employees for the organisation, so that the right candidates for the right jobs can be selected from this pool. It establishes a link between the job seekers and employers.

Proper recruitment enables the organisation to appoint talented persons for various activities, thereby leading to improved productivity and profitability of the organisation. Unless a company adopts a suitable recruitment policy, it may not be possible for a company to have right candidates for right job.

Question 42.
(a) State the advantages of warehousing.
Answer:

• Goods produced may be stored till the time of demand. Hence the goods are stored in warehouses.
• Also the goods are stored till the goods have good quality.
• Warehouses create time utility by storing the goods throughout the year and release them as and when they are needed.

Several types of warehouses are used for storing of goods. They are as follows:

• Public warehouse
• Private warehouse
• Bonded warehouse.

[OR]

(b) What are the objectives of United Nations guidelines for consumer protection?
Answer:
The General Assembly of the United Nations passed a Resolution on April 9, 1985 adopting a set of guidelines for consumer protection to persuade the member countries.
Objectives of United Nations Guidelines for Consumer Protection:

• To assist countries in achieving or maintaining protection to consumers.
• To facilitate production and distribution patterns responsive to the needs and desires of consumers.
• To encourage high levels of ethical conduct for production and distribution of goods and services to consumers.
• To facilitate the developing of independent consumer groups.
• To encourage the development of market conditions which provide consumers with greater choice at lower prices.

Question 43.
(a) How to create Consumer awareness?
Answer:
The first priority of a consumer organisation is to increase consumer awareness towards their rights. The following are the points for awareness:

• To publish brochures, journals and monographs.
• To arrange conferences, seminars and workshops.
• To educate consumers to help themselves.
• To provide special education to women about consumerism.

(b) Explain in detail the various functions of an entrepreneur?
Answer:
The functions of an entrepreneur is divided into
(a) Promotional functions
(b) Managerial functions and
(c) Commercial functions.

(a) Promotional functions
(i) Discovery of Idea: The first and foremost function of entrepreneur is idea generation. A person may conceive his own ideas or develop the ideas contributed by others. Ideas can be generated through several ways like own experience and exposure of entrepreneur, keen observation of environment, education, training, market survey, environmental scanning and so on.

(ii) Detailed Investigation: Entrepreneur should investigate commercial feasibility of the product proposed to be produced and conduct market study to ascertain the potential demand for the product.

(iii) Mobilisation of funds: Entrepreneur has to take steps to mobilise capital needed to implement the venture. Entrepreneur has to estimate the fixed capital and working capital required for running the project.

(b) Managerial functions

Planning: In this function, the entrepreneur has to lay down the objectives, goals, vision, mission, policies, procedures, programmes, budget, schedules etc., for enabling the venture to proceed towards established destinations.

Directing: In this function, the entrepreneur has to motivate, lead, guide and communicate with subordinates on an ongoing basis in order to accomplish pre-set goals.

(c) Commercial functions

Production or Manufacturing: Under production function, entrepreneur has to take decision relating to selection of factory site, design and layout, type of products to be manufactured, research and development.

Accounting: Entrepreneur has to arrange to prepare trading and profit and loss account in order to know the profit or loss incurred out of operation of the business and prepare balance sheet to know the financial status of business.

Question 44.
(a) What is the maximum limit for the Managerial remuneration?
Answer:
Managerial Remuneration: The Managerial remuneration is payable to a person’s appointed u/s 196 of the Act. The Term remuneration means any money or its equivalent given for their services.

Adequate profits: A Public Company can pay remuneration to its directors including Managing Director and Whole-time Directors, and its managers which shall not exceed 11% of the net profit. Maximum Remuneration Payable by a Company to its Managerial Personnel – No adequate Profits:

Remuneration Payable by a company in case where there is no profit or inadequacy of profit and remuneration payable is detailed below:

	Where Effective Capital is	Limit of yearly Remuneration payable shall not exceed (Rupees)
(i)	less than ₹ 5 Crore	₹ 30 lakh
(ii)	Above ₹ 5 Crore and less than ₹ 100 Crore	₹ 42 lakh
(iii)	₹ 5 Crore and above but less than ₹ 100 Crore	₹ 60 lakh
(iv)	₹ 250 Crore and above	₹ 60 lakh plus 9.91% of the effective capital in excess of ₹ 250 Crore

[OR]

(b) Explain different types of open and secret types of voting.
Answer:
The word ‘Vote’ originated from Latin word ‘Votum’ indicating one’s wishes or desire. He can vote formally by expressing his opinion or wish in favour or against a proposal.
Types of Voting: There are two methods of voting viz, open and secret procedures.
(i) Open Voting: This type of voting has no secrecy as all the members assembled can see voting. There are two types of open voting namely voice voting and voting by show of hands.

• By Voice: Voice voting is a popular type of voting in which the chairman allows the members to raise their voice in favour or against an issue ‘Yes’ for approval and ‘No’ for rejection.
• By Show of Hands: Under this method, the chairman requests the members to raise
  their hands for the proposal.

(ii) Secret Procedure: Secret procedure is adopted to decide certain vital issues. It may be of two types:

• By Ballot: Under this system, ballot paper bearing serial number is given to the members to record their opinion by marking with the symbol.
• Postal Ballot: Big companies or big associations having members scattered all over the country follow this method of voting. Under this method, the members or voters fill in the ballot papers sent by the company and return them in sealed covers.

Question 45.
(a) Distinguish between the rural and Urban entrepreneur?
Answer:

S. No.	Rural Entrepreneur	Urban Entrepreneur
1.	It refers to the person who starts business in rural areas.	It refers to the person who commences business in urban areas.
2.	These entrepreneurs start doing business in the villages and small towns.	They will do their business in state capital, towns, district headquarters, municipalities, etc.
3.	They may be agricultural and trading entrepreneurs.	They may be industrial or corporate entrepreneur.
4.	The availability of material and labour is easy. So the cost of operation tends to be low.	The availability of material and labour may be difficult. So the cost of operation may be high.

[OR]

(b) Explain the principles of modern management.
Answer:
The Father of Modem Management is Mr.Henry Fayol, and according to him there are 14 major principles of management which every manager has to practice for the success of the organisation.

(i) Division of Work: According to this principle the whole work is divided into small tasks. This leads to specialization which increases the efficiency of labour.

(ii) Authority and Responsibility: This is the issue of commands followed by responsibility for their consequences.

(iii) Discipline: It is obedience, proper conduct in relation to others, respect of authority, etc.
It is essential for the smooth functioning of all organizations.

(iv) Unity of Command: This principle states that each subordinate should receive orders and be accountable to one and only one superior.

(v) Unity of Direction: All related activities should be put under one group, there should be one plan of action for them, and they should be under the control of one manager.

(vi) Subordination of Individual Interest to Mutual Interest: The management must put aside personal considerations and put company objectives firstly.

(vii) Remuneration: Workers must be paid sufficiently as this is a chief motivation of employees and therefore greatly influences productivity.

(viii) The Degree of Centralization: The amount of power wielded with the central management depends on company size.

(ix) Line of Authority/Scalar Chain: This refers to the chain of superiors ranging from top management to the lowest rank.

(x) Order: Social order ensures the fluid operation of a company through authoritative procedure.

(xi) Equity: Employees must be treated kindly, and justice must be enacted to ensure a just
workplace.

(xii) Stability of Tenure of Personnel: Stability of tenure of personnel is a principle stating that in order for an organisation to run smoothly, personnel (especially managerial personnel) must not frequently enter and exit the organisation.

(xiii) Initiative: Using the initiative of employees can add strength and new ideas to an organisation.

(xiv) Esprit de Corps/Team Spirit: This refers to the need of managers to ensure and develop morale in the workplace; individually and communally.

Question 46.
(a) Explain the characteristics of Money Market?
Answer:
(i) Short-term Funds: It is a market purely for short-term funds or financial assets called near money.
(ii) Maturity Period: It deals with financial assets having a maturity period upto one year only.
(iii) Conversion of Cash: It deals with only those assets which can be converted into cash readily without loss and with minimum transaction cost.
(iv) No Formal Place: Generally, transactions take place through phone, i.e., oral communication. Relevant documents and written communications can be exchanged subsequently.
(v) Sub-markets: It is not a single homogeneous market. It comprises of several sub-markets ‘ each specialising in a particular type of financing.
(vi) Role of Market: The components of a money market are the Central Bank, Commercial Banks. Commercial banks generally play a dominant role in this market.
(vii) Highly Organized Banking System: The Commercial Banks are the nerve centre of the whole money market. They are the principal suppliers of short-term funds.

(viii) Existence of Secondary Market: There should be an active secondary market for these instruments. (be) Demand and Supply of Funds: There should be a large demand and supply of short-term funds.
(ix) Wholesale Market: It is a wholesale market and the volume of funds or financial assets traded in the market is very large.
(xi) Flexibility: Due to greater flexibility in the regulatory framework, there are constant endeavours for introducing new instruments.
(xii) Presence of a Central Bank: The central bank keeps their cash reserves and provides them financial accommodation in difficulties by discounting their eligible securities.

[OR]

(b) What are the difference between on the job training and off the job training?
Answer:

	Basis for comparison	On the Job Training	Off the Job Training
1.	Meaning	The employee learns the job in the actual work environment.	The training of employees is done outside the actual work place.
2.	Cost	It is cheapest to carry out.	It is costly due to the expenses like separate training room, specialist, etc.
3.	Suitable for	Suitable for manufacturing related jobs.	It is suitable for managerial jobs.
4.	Approach	Practical approach	Theoretical approach
5.	Carried out	Provided by the experienced employee	Provided by the experts
6.	Methods	Coaching, mentoring, apprenticeship, job rotation	Seminar, lectures, vestibule, field trip, e-leaming

Question 47.
(a) How the market can be classified? On the basis of different approaches markets can be classified as follows:
Answer:
On the basis of Geographical Area:

• Family Market
• Local Market
• National Market
• International Market or World Market

On the Basis of Commodities / Goods:
(a) Commodity Market:

• Produce Exchange Market
• Manufactured Goods Market
• Bullion Market

(b) Capital Market:

• Money Market
• Foreign Exchange Market
• The Stock Market

On the Basis of Economics:

• Perfect Market
• Imperfect Market

On the Basis of Transaction:

• Spot Market
• Future market

On the Basis of Regulation:

• Regulated Market
• Unregulated Market

On the Basis of Time:

• Very Short Period Market
• Short Period Market
• Long Period Market

On the Basis of Volume of Business:

• Wholesale Market
• Retail Market

On the Basis of Importance:

• Primary Market
• Secondary Market
• Terminal Market

[OR]

(b) Explain the role of consumers in consumer protection.
Answer:
Consumers have to be vigilant and organise themselves into a movement for concerned action.
Activation of Consumer Action Councils:

• Consumer action councils established at village levels should educate consumers.
• Consumer protection agencies should take necessary steps to investigate consumer complaints and grievances.
• Voluntary consumer groups should provide information so as to educate consumers.
• Consumer cooperatives need to be strengthened.
• Consumer groups should contact the legislators to raise the consumer issue in Assembly and Parliament.
• There should be testing laboratories at each district to test the purity of goods.

Students can download 10th Science Chapter 5 Acoustics Questions and Answers, Notes, Samacheer Kalvi 10th Science Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

Tamilnadu Samacheer Kalvi 10th Science Solutions Chapter 5 Acoustics

Samacheer Kalvi 10th Science Acoustics Text Book Back Questions and Answers

I. Choose the correct answer:

Question 1.
When a sound wave travels through air, the air particles:
(a) vibrate along the direction of the wave motion.
(b) vibrate but not in any fixed direction.
(c) vibrate perpendicular to the direction of the wave motion.
(d) do not vibrate.
Answer:
(a) vibrate along the direction of the wave motion.

Question 2.
The velocity of sound in a gaseous medium is 330 ms^-1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is _____.
(a) 330 ms^-1
(b) 660 ms^-1
(c) 156 ms^-1
(d) 990 ms^-1.
Answer:
(a) 330 ms^-1
Hint: Pressure has no effect on the velocity of sound in the gas. So velocity of sound remains unchanged.

Question 3.
The frequency, which is audible to the human ear is:
(a) 50 kHz
(b) 20 kHz
(c) 15000 kHz
(d) 10000 kHz
Answer:
(b) 20 kHz

Question 4.
The velocity of sound in air at a particular temperature is 330 ms^-1. What will be its value when the temperature is doubled and the pressure is halved?
(a) 330 ms^-1
(b) 165 ms^-1
(c) 330 × √2 ms^-1
(d) 320/√2 ms^-1.
Answer:
(c) 330 × √2 ms^-1
Hint: As there is no effect of change in pressure on the velocity of sound in air, and v ∝ √T therefore, when the temperature is doubled, so the velocity becomes 330√2 m/s.

Question 5.
If a sound wave travels with a frequency of 1.25 × 10⁴ Hz at 344 ms^-1, the wavelength will be:
(a) 27.52 m
(b) 275.2 m
(c) 0.02752 m
(d) 2.752 m
Answer:
(c) 0.02752 m

Question 6.
The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
(a) speed
(b) frequency
(c) wavelength
(d) none of these
Answer:
(d) none of these

Question 7.
The velocity of sound in the atmosphere of a planet is 500 ms^-1. The minimum distance between the sources of sound and the obstacle to hearing the echo should be ______.
(a) 17 m
(b) 20 m
(c) 25 m
(d) 50 m.
Answer:
(c) 25 m
Hint: The minimum distance of the source of the sound and hear the echo,
\(d=\frac{v t}{2}\)
t = 0.1 s, \(d=\frac{500 \times 0.1}{2}\) = 25 m.

II. Fill up the blanks:

1. Rapid back and forth motion of a particle about its mean position is called …………
2. If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in …………
3. A whistle giving out a sound of frequency 450 Hz, approaches a stationary observer at a speed of 33 ms^-1. The frequency heard by the observer is (speed of sound = 330 ms^-1) ………..
4. A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is …………

Answer:

1. Wave
2. South to north
3. 500 Hz
4. 2067-3 Hz

III. True or false: (If false give the reason)

1. Sound can travel through solids, gases, liquids and even vacuum.
2. Waves created by Earthquake are Infrasonic.
3. The velocity of sound is independent of temperature.
4. The Velocity of sound is high in gases than liquids.

Answer:

1. False – Sound cannot travel through vacuum.
2. True
3. False – The velocity of sound depends on temperature.
4. True

IV. Match the following:

Answer:
A. (iii)
B. (iv)
C. (ii)
D. (i)

V. Assertion and Reason Questions.

Question 1.
Assertion : The change in air pressure affects the speed of sound.
Reason : The speed of sound in a gas is proportional to the square of the pressure.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(d) If the assertion is false, but the reason is true.

Question 2.
Assertion : Sound travels faster in solids than in gases.
Reason : Solid posses a greater density than that of gases.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(c) If the assertion is true, but the reason is false.

VI. Answer very briefly:

Question 1.
What is a longitudinal wave?
Answer:
In longitudinal wave, the particles of the medium vibrate along the direction of the wave.

Question 2.
What is the audible range of frequency?
Answer:
Audible waves: These are sound waves with a frequency ranging between 20 Hz and 20,000 Hz.

Question 3.
What is the minimum distance needed for an echo?
Answer:
The minimum distance needed for an echo is 17.2 metre.

Question 4.
What will be the frequency sound having 0.20 m as its wavelength when it travels with a speed of 331 ms^-1?
Answer:
Frequency of sound = \(\frac{\text { velocity of sound }}{\text { wavelength of sound }}\)
\(n=\frac{v}{\lambda}=\frac{331}{0.20}\)
n = 1655 Hz.

Question 5.
Name three animals, which can hear ultrasonic vibrations.
Answer:
The animals are dogs, bats and dolphins.

VII. Answer briefly:

Question 1.
Why does sound travel faster on a rainy day than on a dry day?
Answer:
When humidity increases, the speed of sound increases. Hence, sound travels faster on a rainy day than a dry day.

Question 2.
Why does an empty vessel produce more sound than a filled one?
Answer:
The intensity of sound is directly proportional to the square of the amplitude of vibration. I ∝ A² since, the amplitude of vibration of air molecules (empty vessel) is greater than liquid molecules (filled vessel), therefore empty vessel produces a louder sound than the filled vessel.

Question 3.
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V_o = 331 ms^-1)
Answer:
Velocity of sound at 0°C is V_o = 331 ms^-1
Let the sound at 46°C is be v_t
\(\frac{v_t}{v_o}\) = \(\sqrt{\frac{273+T}{273}}\)
where temperature is T = 46°C

= 1.080
v_t = 331 × 1.080 = 357.48 m/s.
∴ Velocity of sound in air at that temperature = 357.48 m/s.

Question 4.
Explain why the ceilings of concert halls are curved.
Answer:

1. These are basically curved surfaces (concave), which are used in auditoria and halls to improve the quality of sound. This board is placed such that the speaker is at the focus of the concave surface.
2. The sound of the speaker is reflected towards the audience thus improving the quality of sound heard by the audience.

Question 5.
Mention two cases in which there is no Doppler effect in sound?
Answer:

1. When source (S) and listener (L) both are at rest.
2. When S and L move in such a way that distance between them remains constant.

VIII. Problem Corner:

Question 1.
A sound wave has a frequency of 200 Hz and a speed of 400 ms-1 in a medium. Find the wavelength of the sound wave.
Answer:
Speed of sound wave v = 400 m/s
Frequency of sound wave n = 200 Hz
∴ Wavelength sound wave λ = \(\frac{v}{n}\)
= \(\frac{400}{200}\) = 2 m
∴ Wavelength = 2 m

Question 2.
The thunder of the cloud is heard 9.8 seconds later than the flash of lightning. If the speed of sound in air is 330 ms^-1, what will be the height of the cloud?
Solution:
The height of the cloud (distance) = speed of sound × time
d = v × t = 330 × 9.8 = 3234 m
The height of the cloud is 3234 m.

Question 3.
A person who is sitting at a distance of 400 m from a source of sound is listening to a sound of 600 Hz. Find the time period between successive compressions from the source?
Answer:
Distance of the observer = 400 m
Frequency of sound n = 600 Hz
Let velocity of sound be v = 330 \(\frac{m}{s}\)
Wavelength λ = \(\frac{v}{n}\) = \(\frac{330}{600}\)
= 55 × 10^-2 = 0.55 m
Distance between two successive compressions is \(\frac{λ}{2}\)
Time period successive compressions is = \(\frac{1}{\frac{λ}{2}}\)
= \(\frac{2}{λ}\) = \(\frac{2}{0.55}\)
T = \(\frac{2}{0.55}\) = 3.6363 second
Time period = 3.6363 second.

Question 4.
An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms^-1?
Answer:
Time interval t = 1.6 s
Velocity of sound in water = 1400 m/s.
Depth of the sea = \(\frac{v×t}{2}\)
= \(\frac{1400×1.6}{2}\)
= 1120 m
Depth of the sea = 1120 m

Question 5.
A man is standing between two vertical walls 680 m apart. He claps his hands and hears two distinct echoes after 0.9 seconds and 1.1 second respectively. What is the speed of sound in the air?
Answer:
Distance between two walls λ = 680 m.
Time periods T₁ = 0.9 s
T₂ = 1.1 s
∴ Frequencies n₁ = \(\frac{1}{T_1}\) = \(\frac{1}{0.9}\) = \(\frac{10}{9}\)
= 1.11 Hz
n₂ = \(\frac{1}{T_2}\)
= \(\frac{1}{1.1}\) = \(\frac{10}{11}\)
= 0.9090 Hz.
Difference x₁ – x₂ = 1.11 – 0.9090
= 0.201 Hz
Speed of sound = (n₁ – n₂)λ
= 0.201 × 680 = 136.68

Question 6.
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, underwater, reaches the other after 3 seconds. What is the speed of sound in the water?
Solution:
Distance between the two boats, d = 4.5 km
d = 4500 m
Time, t = 3 seconds
Speed of sound in the water = \(\frac{\text { Distance travelled by sound }}{\text { Time taken }}\) = \(\frac{4500}{3}\)
v = 1500 ms^-1.

Question 7.
A strong sound signal is sent from a ship towards the bottom of the sea. It is received back after Is.What is the depth of sea given that the speed of sound in water 1450 ms^-1?
Answer:
Speed of sound in water v = 1450 m/s
Time taken t = 1 + 1 = 2 s.
Depth of the sea d = \(\frac{v}{t}\)
= \(\frac{1450}{2}\)
= 725 m
Depth of the sea = 725 m.

IX. Answer in Detail.

Question 1.
What are the factors that affect the speed of sound in gases?
Answer:
Effect of density:
The velocity of sound in a gas is inversely proportional to the square root of the density of the gas. Hence, the velocity decreases as the density of the gas increases.
\(v \propto \sqrt{\frac{1}{d}}\)

Effect of temperature:
(i) The velocity of sound in a gas is directly proportional to the square root of its temperature.
(ii) The velocity of sound in gas increases with the increase in temperature,
v ∝ √T Velocity at temperature T is given by the following equation:
v_T = (v₀ + 0.61 T) ms^-1
Here, v₀ is the velocity of sound in the gas at 0° C. For air, v₀ = 331 ms^-1.
Hence, the velocity of sound changes by 0.61 ms^-1 when the temperature changes by one – degree celsius.

Effect of relative humidity: When humidity increases, the speed of sound increases. That is why we can hear sound from long distances clearly during rainy seasons.

Question 2.
What is mean by reflection of sound? Explain:
(a) Reflection at the boundary of a rarer medium.
(b) Reflection at the boundary of a denser medium.
(c) Reflection at curved surfaces.
Answer:
When sound waves travel in a given medium and strike the surface of another medium, they can be bounced back into the first medium. This phenomenon is known as reflection.
(a) Reflection at the boundary of a rarer medium :

Consider a wave travelling in a solid medium striking on the interface between the solid and the air. The compression exerts a force F on the surface of the rarer medium. As a rarer medium has smaller resistance for any defonnation, the surface of separation is pushed backwards. As the particles of the rarer medium are free to move, a rarefaction is produced at the interface. Thus, a compression is reflected as a rarefaction and a rarefaction travels from right to left.

(b) Reflection at the boundary of a denser medium :

A longitudinal wave travels in a medium in the form of compressions and rarefactions. Suppose a compression travelling in air from left to right reaches a rigid wall. The compression exerts a force F on the rigid wall. In turn, the wall exerts an equal and opposite reaction R = – F on the air molecules.

This results in a compression near the rigid wall. Thus, a compression travelling towards the rigid wall is reflected back as a compression. That is the direction of compression is reversed.

(c) Reflection at curved surfaces :
When the sound waves are reflected from the curved surfaces, the intensity of the reflected waves is changed. When reflected from a convex surface, the reflected waves are diverged out and the intensity is decreased. When sound is reflected from a concave surface, the reflected waves are converged and focused at a point. So the intensity of reflected waves is concentrated at a point.

Question 3.
(a) What do you understand by the term ‘ultrasonic vibration’?
(b) State three uses of ultrasonic vibrations.
(c) Name three animals which can hear ultrasonic vibrations.
Answer:
(a) Ultrasonic Vibration: The vibrations whose frequencies are greater than 20000 Hz are called ultrasonic vibrations.

(b) (i) They are used in SONAR to measure the depth of the sea (or ocean) and to locate underwater objects.
(ii) It is used for scanning and imaging the position and growth of a foetus and presence of stones in the gall bladder and kidney.
(iii) It is used for homogenising milk in milk plants where fresh milk is agitated with the desired quantity of fat and powdered milk to obtain toned milk.

(c) Mosquito, Dogs and Bats are the three animals that can hear ultrasonic vibrations.

Question 4.
What is an echo?
Answer:
An echo is the sound reproduced due to the reflection of the original sound wave.

(a) State two conditions necessary for hearing an echo.
(b) What are the medical applications of echo?
(c) How can you calculate the speed of sound using echo?
Answer:
(a) (i) The persistence of hearing for human ears is 0.1 second. This means that you can hear two sound waves clearly, if the time interval between the two sounds is at least 0.1 s. Thus, the minimum time gap between the original sound and an echo must be 0.1 s.

(ii) The above criterion can be satisfied only when the distance between the source of sound and the reflecting surface would satisfy the following equation:

Since, t = 0.1 second, then
d = \(\frac{v×0.1}{2}\) = \(\frac{v}{20}\)
Thus the minimum distance required to hear an echo is 1/20^th part of the magnitude of the velocity of sound in air. If you consider the velocity of sound as 344 ms^-1, the minimum distance required to hear an echo is 17.2 m.

(b) The principle of echo is used in obstetric ultrasonography, which is used to create real-time visual images of the developing embryo or foetus in the mother’s uterus. This is a safe testing tool, as it does not use any harmful radiations.

(c) The sound pulse emitted by the source travels a total distance of 2d while travelling from the source to the wall and then back to the receiver. The time taken for this has been observed to be ‘t’. Hence, the speed of sound wave is given by:
Speed of sound

X. HOT Questions

Question 1.
Suppose that a sound wave and a light wave have the same frequency, then which one has a longer wavelength?
(a) Sound, (b) Light, (c) both a and b, (d) data not sufficient
Answer:
(b) Light: Since the velocity of light (C = 3 × 10⁸ m/s) is greater than the velocity of sound, light wave has a longer wavelength.

Question 2.
When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.
Answer:
An echo can only be heard if it reaches the ear after 0.1 secs.
\(\text { Time taken }=\frac{\text { Totaldistance }}{\text { Velocity }}\)
As on a hotter day, the velocity of sound is more. So if the time taken by the echo is less than 0.1 sec than it won’t be heard.

Samacheer Kalvi 10th Science Acoustics Additional Important Questions and Answers

I. Choose the correct answer:

Question 1.
Sound waves are:
(a) Transverse waves
(b) Longitudinal waves
(c) Waves
(d) None of the above
Answer:
(b) Longitudinal waves

Question 2.
The velocity of sound in air is ______.
(a) faster in dry air than in moist air
(b) directly proportional to temperature.
(c) directly proportional to pressure.
(d) Slower in dry air than in moist air.
Answer:
(b) directly proportional to temperature.
Hint: v ∝ √T

Question 3.
Which of the following does not affect the velocity of sound?
(a) mass of the gas
(b) density of the gas
(c) temperature of the gas
(d) pressure of the gas
Answer:
(d) pressure of the gas

Question 4.
The apparent frequency in Doppler’s effect does not depend upon.
(a) Speed of the listener.
(b) Distance between the listener and the source.
(c) Speed of the source.
(d) Frequency of the source.
Answer:
(b) Distance between the listener and the source.
Hint: Apparent frequency in Doppler’s effect depends on frequency of the source, direction and velocity of source and listener. It does not depend on the distance between the listener and the source.

Question 5.
Sound of frequency 256 Hz passes through a medium. The maximum displacement is 0.1 m. The maximum velocity is:
(a) 60π m/s
(b) 30π m/s
(c) 51.2π m/s
(d) 512π m/s
Answer:
(c) 51.2π m/s

Question 6.
The speed of a wave in a medium is 760 ms^-1. If 3600 waves the medium in 2 min, then its wavelength is ______.
(a) 13.8 m
(b) 41.5 m
(c) 25.3 m
(d) 57.2 m.
Answer:
(c) 25.3 m
Hint: Number of waves crossing a point per second.
\(\begin{array}{l}{n=\frac{3600}{2 \times 60}=30} \\ {\lambda=\frac{v}{n}=\frac{760}{30}=25.3 \mathrm{m}}\end{array}\).

Question 7.
Two waves are propagating with same amplitude and nearly same frequency in opposite they result in:
(a) longitudinal wave
(b) transverse wave
(c) stationary wave
(d) resonance wave
Answer:
(c) stationary wave

Question 8.
Of these properties of a sound wave, the one that is independent of others is its:
(a) speed
(b) frequency
(c) wavelength
(d) amplitude
Answer:
(d) amplitude

Question 9.
No echo will be heard if the distance between the reflecting obstacle and the source is:
(a) greater than 17.2 m
(b) less than 17.2 m
(c) less than 34.4 m
(d) greater than 34.4 m
Answer:
(b) less than 17.2 m

Question 10.
The velocity of sound in a gas is independent of:
(a) temperature
(b) density
(c) humidity
(d) pressure
Answer:
(d) pressure

Question 11.
The velocity of sound increases for every degree rise of temperature by:
(a) 1 ms^-1
(b) 330 m/s
(c) 0.61 ms^-1
(d) 6.1 m/s
Answer:
(c) 0.61 ms^-1

Question 12.
Longitudinal waves are characterised by:
(a) crest and troughs
(b) compressions and rarefactions
(c) nodes and antinodes
(d) wavelength and frequency
Answer:
(b) compressions and rarefactions

Question 13.
If the frequency of waves lies between 20 Hz and 20 KHz then, they are:
(a) infrasonic waves
(b) ultrasonic waves
(c) audible waves
(d) transverse waves
Answer:
(c) audible waves

Question 14.
The frequency of an infrasonic wave is:
(a) 20 Hz
(b) below 20 Hz
(c) above 20 Hz
(d) above 20 KHz
Answer:
(b) below 20 Hz

Question 15.
The sound waves having frequency greater than 20 KHz are known as:
(a) audible waves
(b) ultrasonic waves
(c) infrasonic waves
(d) mechanical waves
Answer:
(b) ultrasonic waves

Question 16.
Which of the following waves cannot be detected by human ear?
(a) audible wave
(b) infrasonic wave
(c) ultrasonic wave
(d) mechanical wave
Answer:
(c) ultrasonic wave

Question 17.
Which waves are generated by stretched strings?
(a) audible waves
(b) sound waves
(c) ultrasonic waves
(d) infrasonic waves
Answer:
(a) audible waves

Question 18.
The waves produced during earthquake, ocean waves are known as:
(a) audible waves
(b) infrasonic waves
(c) ultrasonic waves
(d) mechanical waves
Answer:
(b) infrasonic waves

Question 19.
Sound wave belong to:
(a) mechanical waves
(b) electromagnetic waves
(c) transverse waves
(d) waves
Answer:
(a) mechanical waves

Question 20.
The waves produced by bats are called:
(a) infrasonic waves
(b) ultrasonic waves
(c) electromagnetic waves
(d) mechanical waves
Answer:
(b) ultrasonic waves

Question 21.
At N.T.P speed of sound waves in air is about:
(a) 3 x 108 m/s
(b) 3 x 10″8 m/s
(c) 340 cm/s
(d) 340 m/s
Answer:
(d) 340 m/s

Question 22.
Sound waves are:
(a) mechanical waves
(b) longitudinal waves
(c) transverse waves
(d) waves
Answer:
(b) longitudinal waves

Question 23.
The velocity of sound is least in ………. medium.
(a) solid
(b) liquid
(c) gaseous
(d) water
Answer:
(c) gaseous

Question 24.
Velocity of sound ……… as the density of the solid increases.
(a) increases
(b) decreases
(c) changes
(d) none of the above
Answer:
(b) decreases

Question 25.
Velocity of sound at a temperature T is given by:
(a) V_T = (V₀ + 0.61 T)
(b) V_T = \(\frac{V_0}{273}\)
(c) V_T = (V₀ – 0.61 T)
(d) V_T = V₀(0.61T)
Answer:
(a) V_T = (V₀ + 0.61 T)

Question 26.
In the case of reflection of sound waves angle of incidence is:
(a) less than angle of incidence
(b) equal to angle of incidence
(c) greater than angle of incidence
(d) greater than angle of refraction.
Answer:
(b) equal to angle of incidence

Question 27.
The direction of compression is reversed during:
(a) refraction
(b) reflection at the boundary of a denser medium
(c) reflection at the boundary of a rarer medium
(d) reflection at the boundary of a curved surface
Answer:
(b) reflection at the boundary of a denser medium

Question 28.
Which of the following property of sound waves is used in ultrasonography?
(a) Reflection of sound
(b) Refraction of sound
(c) Echo sound
(d) Doppler effect sound
Answer:
(c) Echo sound

Question 29.
Which of the following is application of reflection of sound?
(a) Mega phone
(b) Ear trumpet
(c) Sound board
(d) All the above
Answer:
(d) All the above

Question 30.
In Doppler effect when the source and listener move away from each other, the apparent frequency is given by:

Answer:
(a)

Question 31.
When a listener approaches a stationary source, the apparent frequency is given by:

Answer:
(b)

Question 32.
If a source and a listener move towards each other, then the apparent frequency is:

Answer:
(c)

Question 33.
When a source recedes from a stationary listener the apparent frequency is:

Answer:
(a)

Question 34.
When a source moves towards a stationary listener the ratio of apparent frequency to the original frequency is:

Answer:
(b)

Question 35.
When source and listener move one behind the other the apparent frequency is

Answer:
(c)

II. Fill in the blanks:

1. The vibrating bodies produce waves in the form of ………
2. For the propagation of sound, a ………. is required.
3. The frequency range of audible waves is ………..
4. The frequency of infrasonic waves is …………
5. The sound waves with a frequency greater than 20 KHz are known as ………..
6. The wavelength of sound waves ranges from ………..
7. Sound waves are ……….
8. If wavelength of a wave is λ and its time period is T, then velocity of sound wave is ………..
9. If n is the frequency and λ is the wavelength of sound wave then is velocity of wave is given by …………
10. The ascending order of velocity of sound in solids, liquids and gases is given by …………
11. Velocity of sound in a gas is inversely proportional to the ………… of the medium.
12. Velocity of sound in solid is directly proportional to the square root of the ……….. of the medium.
13. Sound can be heard from long distances clearly during …………..
14. When the temperature of a gas changes by one degree Celsius, the velocity of sound changes by ………..
15. In the case of reflection of sound, angle of incidence is equal to ………….
16. When sound waves undergo reflection by convex surface, its intensity is ………..
17. ……….. are used when sound waves have to be focused at a point.
18. In ……….. surfaces, sound from one focus will always be reflected to the other focus.
19. The reproduction of sound due to the reflection of sound is known as …………
20. The minimum time gap between the original sound and an echo must be ………..
21. Echo is used to determine the velocity of ………… in any medium.
22. A horn-shaped device works on the principle of ………….
23. The phenomenon in which the frequency of sound heard by a listener is different from that of sound emitted by the source due to ……….. between a source and a listener is known as Doppler effect.
24. When the distance between the source and listener decreases, the apparent frequency is ………..
25. Apparent frequency in Doppler effect depends on the ……….. of the source and the listener.
26. When a listener moves away from a source at rest, the apparent frequency is n’ = ………..
27. When distance between source listener decreases, the apparent frequency is ………. than ……….. frequency.
28. If the medium moves with a velocity W in a direction opposite to the propagation of sound then, velocity of sound v becomes ………..
29. If the apparent frequency is n’ = (\(\frac{V}{V+V_{S}}\))n then source moves ………….. the ……….. listener.
30. If a listener moves towards the ………. source, the apparent frequency n’ = (\(\frac{V+V_{L}}{V}\))n.
Answer:
1. sound waves
2. medium
3. From 20 Hz to 20 KHz
4. below 20 Hz
5. ultrasonic waves
6. 1.65 cm to 1.65 m
7. longitudinal
8. V = \(\frac{λ}{T}\)
9. V = nλ
10. V_S > V_L > V_G
11. density
12. elastic modulus
13. rainy seasons
14. 0.61 m/s
15. the angle of reflection
16. decreased
17. parabolic surface
18. elliptical
19. echo
20. 0.1 second
21. sound waves
22. echo
23. relative motion
24. n’ = (\(\frac{V+V_{L}}{V-V_{S}}\))n
25. velocities
26. (\(\frac{V+V_{L}}{V}\))n
27. more, actual
29. [V – W]
29. away from, stationary
30. stationary

III. True/False Questions: (If false give the reason)

1. Sound waves are transverse waves by nature.
2. Longitudinal waves are characterised by compressions and rarefactions.
3. Medium is not required for the propagation of light.
4. Ultrasonic waves are the waves with a frequency about 20 KHz.
5. Velocity of sound is the greatest in gas.
6. Velocity of sound in a gas is directly proportional to the square root of its temperature.
7. According to law of reflection of sound, angle of incidence is equal to angle of reflection.
8. When sound waves are reflected from a plane surface, the intensity of the reflected wave is neither decreased nor increased.
9. Ear trumpet works on the principle of reflection of sound.
10. The principle of SONAR is Doppler effect.
Answer:
1. False – Sound waves are longitudinal waves by nature.
2. True
3. True
4. False – Ultrasonic waves are the waves with a frequency greater than 20 KHz.
5. False – Velocity of sound is the least in gas.
6. True
7. True
8. True
9. False – Ear trumpet works on the principle of reflection of sound.
10. True

IV. Match the following:

Question 1.
Match the Column I with Column II.

Answer:
(i) – (D)
(ii) – (E)
(iii) – (A)
(iv) – (B)

Question 2.
Match the Column I with Column II.

Answer:
(i) – (D)
(ii) – (A)
(iii) – (B)
(iv) – (E)

Question 3.
Match the Column I with Column II.

Answer:
(i) – (E)
(ii) – (F)
(iii) – (A)
(iv) – (C)

Question 4.
Match the Column I with Column II.

Answer:
(i) – (C)
(ii) – (E)
(iii) – (A)
(iv) – (D)

V. Assertion and Reason Questions:

Question 1.
Assertion: Sound waves cannot be propagated through vacuum but light can be transmitted.
Reason: Sound waves cannot be polarised but light wave can be polarised.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.

Question 2.
Assertion: Ocean waves hitting a beach are always found to be nearly normal to the shore.
Reason: Ocean waves hitting a beach are assumed to be plane waves.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 3.
Assertion: Speed of a wave is the ratio between wavelength and time period of a wave.
Reason: Wavelength is the distance between two nearest particles in phase.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.

Question 4.
Assertion: When a people moves along the sand within few centimetres of a sand scorpion, the scorpion immediately turns towards the people and dashes towards it.
Reason: When a people disturbs the sand, it sends pulses along the sand’s surface. One set of pulses is longitudinal and other set is transverse.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 5.
Assertion: Light waves are transverse.
Reason: Light waves travel in air with a velocity of 3 × 10⁸ m/s .
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.

Question 6.
Assertion: Velocity of sound in a gas is inversely proportional to the density of a gas.
Reason: When humidity increases the velocity of sound increases.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 7.
Assertion: Echo is produced due to the reflection of sound from walls, mountains etc.
Reason: Echo is used in ultrasonography.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.

Question 8.
Assertion: Doppler effect is due to relative motion between the source and listener.
Reason: Echo is used in RADAR and SONAR.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(d) If the assertion is false, but the reason is true.

VI. Answers very briefly:

Question 1.
What is the nature of sound waves?
Answer:
Sound waves travel through any medium in the form of longitudinal waves.

Question 2.
How is the sound produced?
Answer:
By touching a ringing bell or a musical instrument while it is producing music, we conclude that sound is produced by vibrations.

Question 3.
A wave travelling in a medium has time period T and wavelength λ. How T and λ are related?
Answer:
Wave velocity v = \(\frac{λ}{T}\)
(or) λ = vT

Question 4.
Why don’t we hear sounds when our ears are closed?
Answer:

• We hear the sound even when we close our ears but its magnitude and frequency is very less due to the obstruction of our hands.
• It also depends upon the frequency and loudness of the sound.

Question 5.
What is the relation between frequency and wavelength?
Answer:
Wave velocity = Frequency × Wavelength
v = vλ

Question 6.
What do you understand by the term ‘infrasonic vibration’?
Answer:
Infrasonic waves: These are sound waves with a frequency below 20 Hz that cannot be heard by the human ear. E.g., waves produced during an earthquake, ocean waves, the sound produced by whales, etc.

Question 7.
What is the range of audible frequency?
Answer:
The audible range of frequency is from 20 Hz to 20 KHz.

VII. Answer briefly:

Question 1.
State the differences between sound and light.
Answer:

Question 2.
What is meant by particle velocity?
Answer:
The velocity with which the particles of the medium vibrate in order to transfer the energy in the form of a wave is called particle velocity.

Question 3.
What do you know about wave velocity?
Answer:
The velocity with which the wave travels through the medium is called wave velocity. In other words, the distance travelled by a sound wave in unit time is called the velocity of a sound wave.
∴ velocity = \(\frac{Distance}{Time taken}\)

Question 4.
Define wave velocity.
Answer:
Wave velocity is defined as the distance travelled per second by a sound wave. Since,
Frequency (n) = 1/T, V = \(\frac{λ}{T}\) can be written as V = nλ.

Question 5.
What is the effect of density of a gas on the velocity of sound?
Answer:
The velocity of sound in a gas is inversely proportional to the square root of the density of the gas. Hence, the velocity decreases as the density of the gas increases.
V ∝\(\sqrt{\frac{1}{d}}\)

Question 6.
What is the effect of temperature of a gas on the velocity of sound?
Answer:
The velocity of sound in a gas is directly proportional to the square root of its temperature. The velocity of sound in a gas increases with the increase in temperature.
V ∝ √T . Velocity at temperature T is given by the following equation:
V_T = (V₀ + 0.61T) ms²

Question 7.
What are the factors affect the speed of sound in gases?
Answer:

• Effect of density
• Effect of temperature
• Effect of humidity

Question 8.
What do you know about reflection of sound from a plane surface?
Answer:
When sound waves are reflected from a plane surface, the reflected waves travel in a direction, according to the law of reflection. The intensity of the reflected wave is neither decreased nor increased.

Question 9.
Write a note on whispering gallery.
Answer:
One of the famous whispering galleries is in St. Paul’s cathedral church in London. It is built with elliptically shaped walls. When a person is talking at one focus, his voice can be heard distinctly at the other focus. It is due to the multiple reflections of sound waves from the curved walls.

Question 10.
How is echo of sound produced?
Answer:
An echo is the sound reproduced due to the reflection of the original sound from various rigid surfaces such as walls, ceilings, surfaces of mountains, etc…

Question 11.
Write short notes about mega phone.
Answer:
A megaphone is a horn-shaped device used to address a small gathering of people. Its one end is wide and the other end is narrow. When a person speaks . at the narrow end, the sound of his speech is concentrated by the multiple reflections from the walls of the tube. Thus, his voice can be heard loudly over a long distance.

Question 12.
Define Doppler effect.
Answer:
When ever there is a relative motion between a source and a listener, the frequency of the sound heard by the listener is different from the original frequency of sound emitted by the source. This is known as “Doppler effect”.

Question 13.
How Doppler effect is used to measure the speed of an automobile?
Answer:
An electromagnetic wave is emitted by a source attached to a police car. The wave is reflected by a moving vehicle, which acts as a moving source. There is a shift in the frequency of the reflected wave. From the frequency shift, the speed of the car can be determined. This helps to track the over speeding vehicles.

Question 14.
How is Doppler effect utilised in tracking a satellite?
Answer:
The frequency of radio waves emitted by a satellite decreases as the satellite passes away from the Earth. By measuring the change in the frequency of the radio waves, the location of the satellites is studied.

Question 15.
How is the location of aircrafts found out?
Answer:
In RADAR, radio waves are sent, and the reflected waves are detected by the receiver of the RADAR station. From the frequency change, the speed and location of the aeroplanes and aircrafts are tracked.

Question 16.
How is the speed of submarine estimated?
Answer:
In SONAR, by measuring the change in the frequency between the sent signal and received signal, the speed of marine animals and submarines can be determined.

VIII. Numerical problems:

Question 1.
How far does the sound travel in air when a tuning fork of frequency 256 Hz makes 64 vibrations? Velocity of sound in air = 340 m/s².
Answer:
Velocity of sound in air v = 340 m/s
Frequency v = 256 Hz
Distance travelled by the wave in one vibration is equal to its wavelength. Wavelength λ = \(\frac{v}{V}\)
= \(\frac{340}{256}\) = 1.328 m
Distance travelled by the wave in 64 vibrations
= 1.328 × 64
= 84.992 m = 85 m

Question 2.
A train moving with velocity 30 ms^-1 blows a whistle of frequency 516 Hz. Find the pitch of the sound heard by a passenger ¡n another train approaching the first at a speed of 15 ms^-1, the velocity of sound = 330 ms^-1.
Solution:
It both the trains are approaching each other.
The apparent frequency, \(n^{\prime}=\left(\frac{v+v_{o}}{v-v_{\mathrm{s}}}\right) n\)
\(\begin{array}{l}{n^{\prime}=\left(\frac{330+15}{330-30}\right) \times 516} \\ {n=\frac{345}{300} \times 516=1.15 \times 516} \\ {n^{\prime}=593.4 \mathrm{Hz}}\end{array}\).

Question 3.
A body generates waves of 100 mm long through medium A and 0.25 m long in medium B. If the velocity of waves in medium A is 80 cm s^-1. Then, calculate the velocity of waves in medium B.
Answer:
In medium A wavelength λ_A = 100 mm
= 0.1 m
In medium A velocity v_A = 80 m/s
= 0.8 m/s
In medium B let velocity be v_B
In medium B, wavelength λ_B = 0.25 m
As the frequency of the wave remains same in the two media, so

= 2 m/s
∴ Velocity of waves in the medium B = 2 m/s

Question 4.
A radio station broadcasts its programme at 219.3 m wavelength. Determine the frequency of radio waves if velocity of radio waves 3 × 10⁸ m/s.
Answer:
Velocity of radio waves v = 3 × 10⁸ m/s
Wavelength of radio waves λ = 219.3 m
∴ Frequency of radio waves v = \(\frac{v}{λ}\)
v = \(\frac{3×10^8}{219.3}\)
= 0.013679 × 10⁸
= 13679 × 10² Hz
= 1.36 79 × 10³ Hz
Frequency v = 1.3679 KHz

Question 5.
The speed of a wave in a medium is 960 m/s. If 3600 waves are passing through a point in the medium in 1 minute, then calculate its wavelength.
Answer:
Speed of a wave v = 960 m/s
Frequency of the wave v = 3600 m^-1
\(\frac{3600}{60}\) = 60 s^-1
Wavelength λ = \(\frac{v}{V}\)
\(\frac{960}{60}\) = 16 m
Wavelength = 16 m

Question 6.
If a splash is heard 4.23 second after a stone is dropped into a well 78.4 m deep then calculate the speed of sound in air.
Answer:
For downward motion of the stone,
Initial velocity u = 0
Acceleration a = 9.8 m/s²
Distance S = 74.8 m.
Time t = ?
S = ut + \(\frac{1}{2}\) at²
78.4 = 0 + \(\frac{1}{2}\) × 9.8 t²
= 4.9 t²
∴ t² = \(\frac{78.4}{4.9}\) = 16
∴ t = 4 s
Let ‘t’ be the time taken by the splash of sound to reach the top of the well.
Then,
t + t’ = 4 +t’ = 4.23 s
∴ t = 4.23 – 4 = 0.23 s
∴ Speed of sound in air
\(\frac{distence}{Time}\)
= \(\frac{78.4}{0.23}\)
= 340.87 m/s

Question 7.
At what temperature will the speed of sound be double its value at 273 K?
Answer:
We know that velocity of sound in a gas is inversely proportional to square root of its temperature

T₁ = 0°C = 0 + 273 = 273 K
v₁ = 2v₁ T₂ = ?

∴ T₂ = 4 × 273 = 1092 K
Required temperature = 1092 K

Question 8.
A listener moves towards a stationary source of sound with a velocity one fifth of the velocity of sound. What is the percentage increase in the apparent frequency?
Answer:
Hence listener moves towards the source.
V_L = –\(\frac{V}{5}\), V_S = 0
V_L – Velocity of listener
V_S – Velocity of source
V – Velocity of sound
Apparent frequency = n’

The percentage increase in apparent frequency

= 20%

Question 9.
A siren is fitted on a car going towards a vertical wall at a speed of 36 Kmph. A person standing on the ground behind the car, listens to the siren sound coming directly from the source as well as that coming after reflection from the wall. Calculate the apparent frequency of the wave coming directly from the siren to the person.
Answer:
Velocity of source = 36 Kmph
V_S = 36 × \(\frac{5}{18}\) = 10 m/s
Velocity of sound v = 340 m/s
Frequency n = 500 Hz
For the sound coming directly from the siren to the listener, source (siren) is moving away from the listener so
V_S = -10 m/s V₂ = 0
Apparent frequency of the wave

= 485.7 Hz

Question 10.
The sirens of two fire engines have a frequency of 600 Hz each. A man hears the sirens from the two engines, one approaching him with a speed of 30 Kmph and the car going away from him at a speed of 54 Kmph. What is the difference in frequency of two sirens heard by the man?
Answer:
Velocity of sound be 340 m/s
Frequency n = 600 Hz
Velocity of sound
V = 340 m/s
Velocity of source
Vs = 36 Kmph
\(\frac{36×5}{18}\) = 10 m/s
Velocity listener
V_S = 0
For the engine approaching man

= 618.2 Hz
For the engine going away from the man
V_S = -54 Kmph
= -54 × \(\frac{5}{18}\) = -15 m/s
Velocity of listener V_L = 0
Apparent frequency

Difference in frequencies = n’ – n” = 618.2 – 574.6
= 43.6 Hz

IX. Answer in Detail.

Question 1.
Explain the nature of sound waves.
Answer:
Sound waves are longitudinal waves that can travel through any medium (solids, liquids, gases) with a speed that depends on the properties of the medium. As sound travels through a medium, the particles of the medium vibrate along the direction of propagation of the wave. This displacement involves the longitudinal displacements of the individual molecules from their mean positions. This results in a series of high and low pressure regions called compressions and rarefactions.

Question 2.
Explain in the details of measuring the velocity of sound by the Echo method.
Answer:
Apparatus required:
A source of sound pulses, a measuring tape, a sound receiver, and a stopwatch.
Procedure:

• Measure the distance d between the source of sound pulse and the reflecting surface using the measuring tape.
• The receiver is also placed adjacent to the source. A sound pulse is emitted by the source.
• The stopwatch is used to note the time interval between the instant at which the sound pulse is sent and the instant at which the echo is received by the receiver. Note the time interval as ‘t’.
• Repeat the experiment for three or four times. The average time taken for the given number of pulses is calculated.

Calculation of speed of sound:

• The sound pulse emitted by the source travels a total distance of 2d while travelling from the source to the wall and then back to the receiver.
• The time taken for this has been observed to be ‘t’. Hence, the speed of the sound wave is given by:
  \(\text { Speed of sound }=\frac{\text { Distance travelled }}{\text { Time taken }}=\frac{2 d}{t}\)

Question 3.
Explain laws of reflection with the help of a diagram.
Answer:
The following two laws of reflection are applicable to sound waves as well.
(i) The incident wave, the normal to the reflecting surface and the reflected wave at the point of incidence lie in the same plane.
(ii) The angle of incidence ∠i is equal to the angle of reflection ∠r.
These laws can be observed from figure

In the above Figure, the sound waves that travel towards the reflecting surface are called the incident waves. The sound waves bouncing back from the reflecting surface are called reflected waves. For all practical purposes, the point of incidence and the point of reflection is the same point on the reflecting surface.

A perpendicular line drawn at the point of incidence is called the normal. The angle which the incident sound wave makes with the normal is called the angle of incidence, ‘i’. The angle which the reflected wave makes with the normal is called the angle of reflection, ‘r’.

Question 4.
Explain applications of echo.
Answer:
(i) Some animals communicate with each other over long distances and also locate objects by sending the sound signals and receiving the echo as reflected from the targets.

(ii) The principle of echo is used in obstetric ultrasonography, which is used to create real-time visual images of the developing embryo or fetus in the mother’s uterus. This is a safe testing tool, as it does not use any harmful radiations.

(iii) Echo is used to determine the velocity of sound waves in any medium.

Question 5.
Explain various applications of Doppler effect.
Answer:
1. To measure the speed of an automobile:
An electromagnetic wave is emitted by a source attached to a police car. The wave is reflected by a moving vehicle, which acts as a moving source. There is a shift in the frequency of the reflected wave. From the frequency shift, the speed of the car can be determined. This helps to track the over speeding vehicles.

2. Tracking a satellite:
The frequency of radio waves emitted by a satellite decreases as the satellite passes away from the Earth. By measuring the change in the frequency of the radio waves, the location of the satellites is studied.

3. RADAR (Radio Detection and Ranging):
In RADAR, radio waves are sent, and the reflected waves are detected by the receiver of the RADAR station. From the frequency change, the speed and location of the aeroplanes and aircraft are tracked.

4. SONAR:
In SONAR, by measuring the change in the frequency between the sent signal and received signal, the speed of marine animals and submarines can be determined.

Question 6.
Describe (i) Soundboard
(ii) Ear trumpet and
(iii) Megaphone.
Answer:
(i) Sound Board: These are basically curved surfaces (concave), which are used in auditoria and halls to improve the quality of sound. This board is placed such that the speaker is at the focus of the concave surface. The sound of the speaker is reflected towards the audience thus improving the quality of sound heard by the audience.

(ii) Ear trumpet: Ear trumpet is a hearing aid, which is useful by people who have difficulty in hearing. In this device, one end is wide and the other end is narrow. The sound from the sources fall into the wide end and are reflected by its walls into the narrow part of the device. This helps in concentrating the sound and the sound enters the eardrum with more intensity. This enables a person to hear the sound better.

(iii) MegaPhone: A megaphone is a horn-shaped device used to address a small gathering of people. Its one end is wide and the other end is narrow. When a person speaks at the narrow end, the sound of his speech is concentrated by the multiple reflections from the walls of the tube. Thus, his voice can be heard loudly over a long distance.

Question 7.
What is the Doppler effect? Explain it in several situations.
Answer:
Whenever there is a relative motion between a source and a listener, the frequency of the sound heard by the listener is different from the original frequency of sound emitted by the source. This is known as “Doppler effect”.

For simplicity of calculation, it is assumed that the medium is at rest, That is the velocity of the medium is zero. Let S and L be the source and the listener moving with velocities v_S and v_L respectively. Consider the case of source and listener moving towards each other. As the distance between them decreases, the apparent frequency will be more than the actual source frequency.

Let n and n’ be the frequency of the sound produced by the source and the sound observed by the listener respectively. Then, the expression for the apparent frequency n’ is
n’ = (\(\frac{V+V_L}{V-V_S}\))n
Here, v is the velocity of sound waves in the given medium. Let us consider different possibilities of motions of the source and the listener. In all such cases, the expression for the apparent frequency is given in table

Suppose the medium (say wind) is moving with a velocity W in the direction of the propagation of sound. For this case, the velocity of sound, ‘v’ should be replaced with (v + W). If the medium moves in a direction opposite to the propagation of sound, then ‘v’ should be replaced with (v – W).

Question 8.
Describe the applications of Doppler effect.
Answer:
(i) To measure the speed of an automobile : An electromagnetic wave is emitted by a source attached to a police car. The wave is reflected by a moving vehicle, which acts as a moving source. There is a shift in the frequency of the reflected wave. From the frequency shift, the speed of the car can be determined. This helps to track the over speeding vehicles.

(ii) Tracking a satellite : The frequency of radio waves emitted by a satellite decreases as the satellite passes away from the Earth. By measuring the change in the frequency of the radio waves, the location of the satellites is studied.

(iii) RADAR (RAdio Detection And Ranging) : In RADAR, radio waves are sent, and the reflected waves are detected by the receiver of the RADAR station. From the frequency change, the speed and location of the aeroplanes and aircrafts are tracked.

(iv) SONAR (SOund Navigation And Ranging) : In SONAR, by measuring the change in the frequency between the sent signal and received signal, the speed of marine animals and submarines can be determined.

Question 9.
Explain the conditions for no Doppler effect.
Answer:
Under the following circumstances, there will be no Doppler effect and the apparent frequency as heard by the listener will be the same as the source frequency.

1. When source (S) and listener (L) both are at rest.
2. When S and L move in such a way that distance between them remains constant.
3. When source S and L are moving in mutually perpendicular directions.
4. If the source is situated at the center of the circle along which the listener is moving.

IX. Hot questions:

Question 1.
Why is frequency the most fundamental property of a wave?
Answer:
When a waves travels from one medium to another, its velocity and wavelength may change. But the frequency does not change hence the frequency is the most fundamental property of a wave.

Question 2.
Which properties of solid are required for the propagation of sound?
Answer:
Elasticity and inertia are the properties of solid are required for the propagation of sound.

Question 3.
What does cause the rolling sound of thunder?
Answer:
The multiple reflections of sound of lightning produce the rolling sound of thunder.

Question 4.
On the surface of moon, two astronauts can not talk to each other. Give reason.
Answer:
Sound waves require material medium for their propagation. As there is no ‘ atmosphere, on the moon, hence the sound wave can not propagate on the moon.

Question 5.
If a person places his ear to one end of a long iron pipeline, he can distinctly hear two sound waves when a workman hammers the other end of the pipeline. How?
Answer:
Sound waves travel sixteen times faster in iron than in air. Hence the person hears two sounds, the first one travelling through the iron pipeline and the second travelling through air.

Question 6.
Sound waves travel faster in solids than in liquids and gases. Why?
Answer:
Sound waves travel faster in solids with greatest speed. Because the coefficient of elasticity of solids is much greater than coefficient of elasticity of liquids and gases.

Question 7.
If an explosion takes place at the bottom of a lake, will the shock waves in water be longitudinal or transverse?
Answer:
An explosion in a lake produces shock waves there by creating enormous increase in pressure in water.
A shock wave is thus a longitudinal wave travelling at a speed that is greater than that of a longitudinal wave of ordinary intensity.

Question 8.
Sound can be heard over longer distances on a rainy day. Give reason.
Answer:
On a rainy day, air contains a large amount of water vapour. This decreases the density of air. Hence, sound travels faster in air and can be heard over longer distances.

Students can Download Tamil Nadu 12th Commerce Model Question Paper 5 English Medium Pdf, Tamil Nadu 12th Commerce Model Question Papers helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

TN State Board 12th Commerce Model Question Paper 5 English Medium

Instructions:

1. The question paper comprises of four parts.
2. You are to attempt all the parts. An internal choice of questions is provided wherever applicable.
3. All questions of Part I, II. III and IV are to be attempted separately.
4. Question numbers 1 to 20 in Part I are Multiple Choice Questions of one mark each. These are to be answered by choosing the most suitable answer from the given four alternatives and writing the option code and the corresponding answer.
5. Question numbers 21 to 30 in Part II are two-mark questions. These are to be answered in about 50 words.
6. Question numbers 31 to 40 in Part III are three-mark questions. These are to be answered in about 150 words.
7. Question numbers 41 to 47 in Part IV are five-mark questions. These are to be answered in about 250 words. Draw diagrams wherever necessary.

Time: 3 Hours
Max Marks: 90

Part -I

Choose the correct answer. Answer all the questions: [20 x 1 = 20]

Question 1.
…………… is a global and universal concept.
(a) Management
(b) Process
(c) Art
(d) Science
Answer:
(a) Management

Question 2.
………… is the subsidiary function of management.
(a) Planning
(b) Co-ordination
(c) Innovation
(d) Controlling
Answer:
(c) Innovation

Question 3.
The Indian financial system can be broadly classified into………….. sector.
(a) Two
(b) Three
(c) One
(d) Four
Answer:
(a) Two

Question 4.
Money market is a market for purely …………..
(a) Short term funds
(b) Long term funds
(c) Medium term funds
(d) None of these
Answer:
(a) Short term funds

Question 5.
Which is not a foreign stock exchange?
(a) London stock exchange
(b) Bombay stock exchange
(c) Tokyo stock exchange
(d) New york stock exchange
Answer:
(b) Bombay stock exchange

Question 6.
SEBI got the statutory powers in the year …………..
(a) 1988
(b) 1992
(c) 1969
(a) 1980
Answer:
(b) 1992

Question 7.
The internal source of recruitment are …………..
(i) promotion
(ii) e-recruitment
(iii) retention
(iv) advertisements
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (iii) and (iv)
Answer:
(b) (i) and (iii)

Question 8.
The types of Aptitude Test are …………..
(i) Numerical Reasoning Test
(ii) Attitude Test
(iii) Vocabulary Test
(iv) Interest Test
(a) (i) and (ii)
(b) (i) and (iii)
(c) (I) and (iv)
(d) (ii) and (iii)
Answer:
(b) (i) and (iii)

Question 9.
On the job training is given to the employee at the ……………
(a) College
(b) Home
(c) Work place
(d) None of the above
Answer:
(c) Work place

Question 10.
Find Out which is not suitable? The products marketed in commodity exchange are…………..
(a) Crude oil
(b) Rice
(c) Copper
(d) Gold
Answer:
(b) Rice

Question 11.
The term ‘Caveat emptor’ is a Latin term, which means ………..
(a) Let the seller beware
(b) Let the buyer beware
(c) Consumer
(d) Marketer
Answer:
(b) Let the buyer beware

Question 12.
The consumer is the of the modern marketing.
(a) Manager
(b) Director
(c) King
(d) None of these
Answer:
(c) King

Question 13.
The national commission should have ……….. members.
(a) 3
(b) 4
(c) 5
(d) 6
Answer:
(c) 5

Question 14.
It is a situation in which a country loses its most educated and talented workers to other countries is known as…………
(a) Liberalisation
(b) Foreign trade
(c) Brain Drain
(d) Nationalisation
Answer:
(c) Brain Drain

Question 15.
A bill of exchange drawn on a specified banker is ………..
(a) promissory note
(b) cheque
(c) hundi
(d) share
Answer:
(b) cheque

Question 16.
The entrepreneurs classified on the basis of type of business are …………..
(i) Industrial entrepreneur
(ii) Technical entrepreneur
(iii) Professional entrepreneur
(iv) Business entrepreneur
(a) (z) and (ii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Answer:
(b) (i) and (iv)

Question 17.
The first two stages of formation of a company are ………..
(i) Issue of prospectus
(ii) Promotion
(iii) Issue of share certificate
(iv) Registration
(a) (i) and (ii)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (i) and (iii)
Answer:
(b) (ii) and (iv)

Question 18.
A company may appoint more than 15 directors after passing a ……….. resolution.
(a) Special
(b) Ordinary
(c) Usual
(d) Commanding
Answer:
(a) Special

Question 19.
A person can hold the position of Directorship in different companies upto the maximum of …………
(a) 15
(b) 10
(c) 18
(d) 20
Answer:
(d) 20

Question 20.
A statutory meeting can be held within months.
(a) 10
(b) 5
(c) 6
(d) 3
Answer:
(c) 6

Part – II

Answer any seven in which Question No.30 is compulsory. [7 x 2 = 14]

Question 21.
State the meaning of Authority.
Answer:
Authority means the right of a superior to give the order to his subordinates. This is the issue of commands followed responsibility for their consequences.

Question 22.
What is debt market?
Answer:
Debt Market is the financial market for trading in Debt Instrument (i.e. Government Bonds or Securities, Corporate Debentures or Bonds).

Question 23.
What is Government Securities Market?
Answer:
A market whereby the Government or gilt-edged securities can be bought and sold is called ‘Government Securities Market’.

Question 24.
Write any 5 Stock Exchanges in India.
Answer:

• The Bombay Stock Exchange
• Bangalore Stock Exchange Ltd.
• The Madras Stock Exchange Ltd.
• The Hydrabad Stock Exchange Ltd.
• The Cochin Stock Exchange Ltd.

Question 25.
What is intelligence test?
Answer:
Intelligence tests are one of the psychological tests, that is designed to measure a variety of mental ability, individual capacity of a candidate.

Question 26.
Define Product.
Answer:
“A product is anything that can be offered to a market for attention, acquisition, use or consumption that might satisfy a want or a need”, says Philip Kotler.

Question 27.
Give two examples of adulteration.
Answer:

• Powdered rice/wheat is adulterated with starch.
• Coffee powder is adulterated with tamarind seed.

Question 28.
List down the essential elements of a contract of sale.
Answer:
Following essential elements are necessary for a contract of sale:

• Two Parties
• Transfer of Property
• Goods
• Price
• Includes both ‘Sale’ and ‘Agreement to Sell’.

Question 29.
Mention the other name for corporate entrepreneur.
Answer:
Corporate entrepreneur is called promoter. He/she takes initiative necessary to start an entity under corporate format.

Question 30.
What is Resolution?
Answer:
As per the Companies Act 2013, for taking any decision or executing any transaction, the consent of the shareholders, the Board of Directors and other specified is required. The decisions taken at a meeting are called resolutions.

Part – III

Answer any seven in which question No. 40 is compulsory. [7 x 3 = 21]

Question 31.
What are the Process of MBE?
Answer:

• Primarily, it is necessary to set objectives or norms with predictable or estimated results.
• These performances are assessed and get equated to the actual performance.
• Next, the deviation gets analysed. With an insignificant or no deviation, no action is required and senior managers can concentrate on other matters.

Question 32.
Explain any two functions of Capital Market.
Answer:
(i) Savings and Capital Formation: In capital market, various types of securities help to, mobilize savings from various sectors of population (Individuals, Corporate, Govt., etc.). The twin features of reasonable return and liquidity in stock exchange are definite incentives to the people to invest in securities. This accelerates the capital formation in the country.

(ii) Permanent Capital: The existence of a capital market/stock exchange enables companies to raise permanent capital. The investors cannot commit their funds for a permanent period but companies require funds permanently.

Question 33.
What are the features of Human resources?
Answer:

• Human resource exhibits innovation and creativity.
• Human resource alone can think, act, analyse and interpret.
• Human resources are emotional beings.
• Human resources can be motivated either financially or non-financially.
• The behaviour of human resources are unpredictable.
• Over years human resources gains value and appreciates.
• Human resources are movable.
• Human resource can work as a team.

Question 34.
What can be marketed in the Market?
Answer:
The dynamic items that can be marketed are listed below:

• Goods
• Services
• Experiences
• Events
• Persons
• Places
• Properties
• Organisations
• Information
• Ideas

Question 35.
Who are the members of the National Commission?
Answer:
Members: The National Consumer Disputes Redressal Commission has been constituted by a Notification.

• The National Commission should have five members.
• One should be from judiciary.
• Four other members of ability, knowledge and experience from any other fields.
• It should include a woman.

Question 36.
Write about any three internal environmental factors of business.
Answer:
The major internal factors affecting business decisions are:

• Values system: The values of the founder/owner of the business , percolates down to the entire organisation and has a profound effect on the organisation.
• Vision and objectives: The vision and objectives of a business guides its operations and strategic decisions.
• Management structure: The structure of management/board and their style of functioning, the level of professionalism of management, the composition of the board are the various factors which affect the decision making.

Question 37.
Distinguish between Bill of Exchange and Promissory Note.
Answer:

S. No.	Basis of Difference	Bill of Exchange	Promissory Note
1.	Nature of Undertaking	A bill of exchange contains an unconditional order to pay money.	A promissory note contains an unconditional undertaking to pay money.
2.	No. of Parties	There are three parties in a bill of exchange – drawer, drawee and payee.	In a promissory note there are only two parties the maker and the payee.
3.	Drawer of the instrument	A creditor draws a bill on a debtor.	A debtor executes a promissory note in favour of a creditor.
4.	Identity of the parties	In a bill of exchange, both the drawer and the payee can be one and the same person.	In a promissory note, the maker himself cannot be the payee because the same person cannot be both the promisor and the promisee.

Question 38.
List down few examples of pure entrepreneurship.
Answer:
Pure entrepreneurs are individuals who are propelled to enter into venture by psychological and economic motives. They nurture desire of starting a particular venture and earning high profit there from and thus attaining a social status. They apply their knowledge, skill and insight in making the venture a great success in order to earn maximum profit out of the venture. Dhirubai Ambani, Jamshedji Tata, T.V. Sundaram Iyengar, Seshadriji, Birla, Narayanamurthi, and Azim Premji are few examples of pure entrepreneurship.

Question 39.
Expand the following: STEP, JAM, TREAD, M-S1PS, SEED and New Gen IEDC.
Answer:

• STEP: Support to Training and Employment Programme for women
• JAM: Jan-Dhan-Aadhaar-Mobile
• M-SIPS: Modified Special Incentive Package Scheme
• SEED: Science for Equity Empowerment and Development
• New Gen IEDC: New Gen Innovation and Entrepreneurship Development Centre
• TREAD: Trade Related Entrepreneurship Assistance and Development.

Question 40.
Who is a shadow director?
Answer:
A shadow director is a person who is not the member of Board but has some power to run it and can be appointed as the director but according to his/her wish.

Part – IV

Answer all the following questions. [7 x 5 = 35]

Question 41.
(a) Explain the principles of modern management.
Answer:
The Father of Modem Management is Mr.Henry Fayol, and according to him there are 14 major principles of management which every manager has to practice for the success of the organisation.
(i) Division of Work: According to this principle the whole work is divided into small tasks.
This leads to specialization which increases the efficiency of labour.
(ii) Authority and Responsibility: This is the issue of commands followed by responsibility for their consequences.
(iii) Discipline: It is obedience, proper conduct in relation to others, respect of authority, etc.
It is essential for the smooth functioning of all organisations.
(iv) Unity of Command: This principle states that each subordinate should receive orders and be accountable to one and only one superior.
(v) Unity of Direction: All related activities should be put under one group, there should be one plan of action for them, and they should be under the control of one manager.
(vi) Subordination of Individual Interest to Mutual Interest: The management must put aside personal considerations and put company objectives firstly.
(vii) Remuneration: Workers must be paid sufficiently as this is a chief motivation of employees and therefore greatly influences productivity.

(viii) The Degree of Centralization: The amount of power wielded with the central management depends on company size.
(ix) Line of Authority/Scalar Chain: This refers to the chain of superiors ranging from top management to the lowest rank.
(x) Order: Social order ensures the fluid operation of a company through authoritative procedure.
(xi) Equity: Employees must be treated kindly, and justice must be enacted to ensure a just workplace.
(xii) Stability of Tenure of Personnel: Stability of tenure of personnel is a principle stating that in order for an organisation to run smoothly, personnel (especially managerial personnel) must not frequently enter and exit the organisation.
(xiii) Initiative: Using the initiative of employees can add strength and new ideas to an organisation.
(x/v) Esprit de Corps/Team Spirit: This refers to the need of managers to ensure and develop morale in the workplace; individually and communally.

[OR]

(b) Discuss the disadvantages of MBE.
Answer:

• The main disadvantage of MBE is, only managers have the power over really important decisions, which can be demotivating for employees at a lower level.
• Furthermore, it takes time to pass the issues to managers. Managing employees who deviate from the normal procedures. Because of compliance failures are considered difficult to manage and typically find themselves with limited job duties and ultimately dismissed/ terminated.

Question 42.
(a) Discuss the role of financial market.
Answer:

• Savings Mobilization: Obtaining funds from the savers or ‘surplus’ units such as household individuals, business firms, public sector units, Government is an important role played by financial markets.
• Investment: Financial market plays a key role in arranging the investment of funds thus
  collected, in those units which are in need of the same.
• National Growth: Financial markets contribute to a nation’s growth by ensuring an unfettered flow of surplus funds to deficit units. Flow of funds for productive purposes is also made possible, ft leads to overall economic growth.
• Entrepreneurship Growth: Financial markets contribute to the development of the entrepreneurial class by making available the necessary financial resources.
• Industrial Development: The different components of financial markets help an accelerated growth of industrial and economic development of a country and thus contributing to raising the standard of living and the society’s well-being.

[OR]

(b) Explain the features and types of Commercial Bills.
Answer:

• Drawer
• Acceptor
• Payee
• Discounter
• Endorser
• Assessment
• Maturity
• Credit Rating

Types:

• Demand and Usance Bills: A demand bill is one wherein no specific time of payment is mentioned. So, demand bills are payable immediately when they are presented to the drawee.
• Clean Bills and Documentary Bills: Bills that are accompanied by documents of title
  to goods are called documentary bills. Clean bills are drawn without accompanying any document.
• Inland Bills and Foreign Bills: Bills that are drawn and payable in India on a person who is resident in India are called inland bills.
• Indigeneous Bills: The drawing and acceptance of indigenous bills are governed by native custom or usage of trade.
• Accommodation and Supply Bills: Accommodation bills are those which do not arise out of genuine trade of transactions.

Question 43.
(a) What are the benefits of Dematerialisation?
Answer:

• The risks relating to physical certificates like loss, theft, forgery are eliminated completely with a Demat Account.
• The risk of paper work enables quicker transactions and higher efficiency in trading.
• The shares which are created through mergers and consolidation of companies are credited automatically in the Demat account.
• There is no stamp duty for transfer of securities.
• Certain banks also permit holding of both equity and debt securities in a single account.
• A Demat account holder can buy or sell any amount of shares.

[OR]

(b) Elaborate on the factors affecting recruitment.
Answer:
Some of the factors that affect recruitment are:

• Size of the Organisation: Bigger organisations find recruitment less problematic than organisations that are smaller in size.
• Recruiting Policy: Most organisations prefer recruiting through internal sources, because own employees know the organisation and they can well fit into the organisation’s culture.
• Nature of Post: The recruitment process varies according to type of personnel to be recruited. For example, recruitment process of a bank officer will differ from that of an IPS officer.
• Demographic factors: Like the details of possible employees- age, religion, literacy level, gender, occupation, economic status, etc.
• Unemployment rate: If the unemployment rate is high, the number of applicants will be more, making it easy for the recruiters to select from a wide range.
• Labour Laws: These cover working conditions, compensation, retirement benefits, and safety and health of employees in industrial undertakings.
• Competitors: Time to time the organisations have to change their recruitment policies and manuals according to the policies being followed by the competitors.

Question 44.
(a) Explain the benefits of training.
Answer:
(i) Benefits to the Organisation:

• It improves the skill of employees and increase the productivity.
• It reduces wastages of materials and idle time.
• It minimizes the time for supervision.
• It reduces the frequent accidents at workplace and consequent payment of compensation.

(ii) Benefits to the Employees:

• It increases the knowledge, skill of the employees.
• It enables him to gain promotion in shorter time.
• It improves the employees productivity.
• Employees get higher earnings through incentives and rewards.

(iii) Benefits of Customer:

• Customers get better quality of product and service.
• Customers get innovative products or value added or feature rich products.

[OR]

(b) Narrate the Elements of Marketing mix.
Answer:
Marketing mix means a marketing programme that is offered by a firm for the satisfaction of human wants. There are four Elements of Marketing mix:

• Product: A Product is the main element of marketing. Without a product, there can be no marketing.
• Price: Price is the value of a product expressed in monetary terms. It is the amount Charged for the product.
• Place (Physical Distribution): An excellent quality product, with a good price, will be waste, if it is not transferred from the production place to consumption place.
• Promotion: An excellent product with competitive price cannot achieve a desired success and acceptance in market, with special features are conveyed to the consumers.

Question 45.
(a) What are the objectives of Consumer Protection Act, 1986?
Answer:
The Central Government enacted a comprehensive law called the Consumer Protection Act in 1986. This Act came into force with effect from 15.04.1987. It is in short, called as ‘COPRA’.
Objectives:

• Consumer protection Act protects the interests of the consumers.
• This Act provides safeguard against defective goods and deficient services, unfair trade practices.
• It also gives settlement of consumer disputes.
• It is applicable to public sector, financial and co-operative enterprises.

[OR]

(b) Classify goods under the Sale of Goods Act.
Answer:
The term goods mean every kind of movable property other than actionable claim and money.
The goods are classified as follows:
(1) Existing Goods- These goods are owned or possessed by the seller at the time of contract of sale. Existing goods may again be divided as:

• Specific Goods- It denotes goods identified and agreed upon at the time of contract of sale.
• Ascertained Goods- The term ‘ascertained goods’ is also used as similar in meaning to specific goods.
• Unascertained Goods- These are goods which are not identified and agreed upon at the time of contract of sale.

(2) Future Goods- These are goods which a seller does not possess at the time of contract of
sale, but which will be manufactured or produced or acquired by him after entering into the contract.
(3) Contingent Goods- These are the goods, the acquisition of which by the seller depends upon a contingency (an event which may or may not happen).

Question 46.
(a) What are the requisites for a valid endorsement?
Answer:
If an endorsement is to be valid, it must possess the following requisites:

• Endorsement is to be made on the face of the instrument or on its back.
• When there is no space for making further endorsements a piece of paper can be attached
• Endorsement for only a part of the amount of the instrument is invalid.
• Endorsement is complete only when delivery of the instrument is made.
• Signing in block letters does not constitute regular endorsement.
• If the payee is an illiterate person, he can endorse it by affixing his thumb impression on the instrument.

[OR]

(b) Distinguish between the rural and urban entrepreneur.
Answer:

S. No.	Rural Entrepreneur	Urban Entrepreneur
1.	It refers to the person who starts business in rural areas.	It refers to the person who commences business in urban areas.
2.	These entrepreneurs start doing business in the villages and small towns.	They will do their business in state capital, towns, district headquarters, municipalities, etc.
3.	They may be agricultural and trading entrepreneurs.	They may be industrial or corporate entrepreneur.
4:	The availability of material and labour is easy. So the cost of operation tends to be low.	The availability of material and labour may be difficult. So the cost of operation may be high.

Question 47.
(a) What formalities need to be fulfilled for a companies having share capital to commence business?
Answer:
A public limited company having its share capital has to pass through two more stages. One of them is capital subscription, steps to be taken at this stage are listed below:

• The fulfilling formalities to raise necessary capital.
• Following the SEBI guidelines in this regard.
• Issuing prospectus.
• Appointing official banker of the company for receiving application from the investors,
• Passing resolution for making allotments by director.
• Despatch allotment letters to allottees.
• Filing allotment returns with the Registrar.
• Issuing share certificates in exchange for their allotment letter.
• Ensuring collection of minimum subscription.

[OR]

(b) List the disqualification of a directors.
Answer:
Disqualifications of a Director: Section 164 of Companies Act, 2013, has mentioned the disqualification as follows: A person shall not be capable of being appointed director of a company, if the director is

• Of unsound mind
• An undercharged insolvent
• Has been convicted by a court for any offence
• Has not paid any call in respect of shares of the company held by him
• An order disqualifying him for appointment as director has been passed by a court
• He has not got the Director Identification Number.

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Tamilnadu Samacheer Kalvi 10th Science Solutions Chapter 6 Nuclear Physics

Samacheer Kalvi 10th Science Nuclear Physics Text Book Back Questions and Answers

I. Choose the correct answer.

Question 1.
Man-made radioactivity is also known as;
(a) Induced radioactivity
(b) Spontaneous radioactivity
(c) Artificial radioactivity
(d) (a) and (c)
Answer:
(a) Induced radioactivity

Question 2.
Unit of radioactivity is _____.
(a) roentgen
(b) curie
(c) becquerel
(d) all the above.
Answer:
(d) all the above.

Question 3.
Artificial radioactivity was discovered by:
(a) Becquerel
(b) Irene Curie
(c) Roentgen
(d) Neils Bohr
Answer:
(b) Irene Curie

Question 4.
In which of the following, no change in mass number of the daughter nuclei takes place _____.
(i) α decay
(ii) β decay
(iii) γ decay
(iv) neutron decay
(a) (i) is correct
(b) (ii) and (iii) are correct
(c) (i) & (iv) are correct
(d) (ii) & (iv) are correct.
Answer:
(b) (ii) and (iii) are correct

Question 5.
……. isotope is used for the treatment of cancer.
(a) Radio Iodine
(b) Radio Cobalt
(c) Radio Carbon
(d) Radio Nickel
Answer:
(b) Radio Cobalt

Question 6.
Gaming radiations are dangerous because of _____.
(a) it affects eyes & bones
(b) it affects tissues
(c) it produces genetic disorder
(d) it produces an enormous amount of heat.
Answer:
(c) it produces genetic disorder

Question 7.
……… aprons are used to protect us from gamma radiations.
(a) Lead oxide
(b) Iron
(c) Lead
(d) Aluminium
Answer:
(c) Lead

Question 8.
Which of the following statements is/are correct?
(i) a particles are photons.
(ii) Penetrating power of γ radiation is very low.
(iii) Ionization power is maximum for a rays.
(iv) Penetrating power of γ radiation is very high.
(a) (i) & (ii) are correct
(b) (ii) & (iii) are correct
(c) (iv) only correct
(d) (iii) & (iv) are correct
Answer:
(d) (iii) & (iv) are correct

Question 9.
Proton-Proton chain reaction is an example of _____.
(a) Nuclear fission
(b) α – decay
(c) Nuclear fusion
(d) β – decay.
Answer:
(c) Nuclear fusion

Question 10.
In the nuclear reaction the value of A and Z.
(a) 8, 6
(b) 8, 4
(c) 4, 8
(d) cannot be determined with the given data
Answer:
(b) 8, 4

Question 11.
Kamini reactor is located at:
(a) Kalpakkam
(b) Koodankulam
(c) Mumbai
(d) Rajasthan
Answer:
(a) Kalpakkam

Question 12.
Which of the following is/are correct?
(i) Chain reaction takes place in a nuclear reactor and an atomic bomb.
(ii) The chain reaction in a nuclear reactor is controlled
(iii) The chain reaction in a nuclear reactor is not controlled
(iv) No chain reaction takes place in an atom bomb
(a) (i) only correct
(b) (i) & (ii) are correct
(c) (iv) only correct
(d) (iii) & (iv) are correct.
Answer:
(b) (i) & (ii) are correct

II. Fill in the blanks.

1. One roentgen is equal to ………… disintegrations per second.
2. Positron is an …………
3. Aneamia can be cured by ………… isotope.
4. Abbreviation of ICRP …………..
5. ………… is used to measure exposure rate of radiation in humans.
6. ………. has the greatest penetration power.
7. _ZY^A → _Z+1Y^A + X; Then, X is …………..
8. _ZX^A → _ZY^A This reaction is possible in …………. decay.
9. The average energy released in each fusion reaction is about …………. J.
10. Nuclear fusion is possible only at an extremely high temperature of the order of ……….. K.
11. The radio isotope of …………. helps to increase the productivity of crops.
12. If the radiation exposure is 100 R, it may cause ………….
Answer:
1. 1.6 × 10¹⁵ disintegrations / second
2. antiparticle [₁e⁰]
3. Radio iron Fe⁵⁹
4. International Commission on Radiological Protection
5. Dosimeter
6. Gama rays
7. X is _-1e⁰
8. gamma
9. 3.84 × 10¹² J
10. 10⁷ to 10⁹ K
11. Radio phosphorus P – 32
12. fatal diseases like leukemia.

III. State whether the following statements are true or false: If false, correct the statement.

1. Plutonium -239 is a fissionable material.
2. Elements having atomic number greater than 83 can undergo nuclear fusion.
3. Nuclear fusion is more dangerous than nuclear fission.
4. Natural uranium U-238 is the core fuel used in a nuclear reactor.
5. If a moderator is not present, then a nuclear reactor will behave as an atom bomb.
6. During one nuclear fission on an average, 2 to 3 neutrons are produced.
7. Einstein’s theory of mass energy equivalence is used in nuclear fission and fusion.
Answer:
1. True
2. False – Elements having atomic number greater than 83 can undergo nuclear fission.
3. True
4. False – Natural U – 238 not used as fuel in a nuclear reactor.
5. True
6. True
7. True

IV. Match the following.

Question 1.
Match the column I with column II.

Answer:
(a) – (iii)
(b) – (i)
(c) – (iv)
(d) – (ii)

Question 2.
Match the column I with column II.

Answer:
(a) – (iv)
(b) – (ii)
(c) – (iii)
(d) – (i)

Question 3.
Match the column I with column II.

Answer:
(a) – (ii)
(b) – (iv)
(c) – (i)
(d) – (iii)

Question 4.
Match the column I with column II.

Answer:
(a) – (iv)
(b) – (iii)
(c) – (ii)
(d) – (i)

Question 5.
Match the column I with column II.

Answer:
(a) – (iii)
(b) – (iv)
(c) – (ii)
(d) – (i)

V. Arrange the following in the correct sequence.

Question 1.
Arrange in descending order, on the basis of their penetration power. Alpha rays, beta rays, gamma rays, cosmic rays
Answer:
gamma rays < beta rays < alpha rays < cosmic rays.

Question 2.
Arrange the following in the chronological order of discovery.
Nuclear reactor, radioactivity, artificial radioactivity, discovery of radium.
Answer:
Discovery of radium, Radioactivity, Artifical radioactivity, Nuclear reactor.

VI. Use the analogy to fill in the blank.

1. Spontaneous process : Natural Radioactivity, Induced process : ………..
2. Nuclear Fusion : Extreme temperature, Nuclear Fission : ………..
3. Increasing crops : Radio phosphorous, Effective functioning of heart : …………
4. Deflected by electric field : a ray, No Deflection : ………….

Answer:

1. artifical radioactivity
2. higher temperature
3. Radio sodium
4. γ-ray

VII. Numerical problems.

Question 1.
₈₈Ra²²⁶ experiences three a – decay. Find the number of neutrons in the daughter element.
Answer:
Mass number of ₈₈Ra²²⁶ is 266
Atomic number of ₈₈Ra²²⁶ is 88
Mass number of α = 4
Atomic number of α = 2
After 3 a decay
Mass number of the daughter element is
= 266 – (3 × 4)
= 266 – 12
= 254
Atomic number of the daughter element is
= 88 – (3 × 2)
= 88 – 6
= 82
Number of neutrons is
= 254 – 82
= 172

Question 2.
A cobalt specimen emits induced radiation of 75.6 millicurie per second. Convert this disintegration in to becquerel (one curie = 3.7 × 10¹⁰ Bq).
Answer:
1 curie = 3.7 × 10¹⁰ Bq
∴ 75.6 × 10^-3 curie = 75.6 × 10^-3 × 3.7 × 10¹⁰
= 279.72 × 10⁷ Bq
= 279.72 × 10⁷ Becquerel

VIII. Assertion and reason type questions.

Question 1.
Assertion: A neutron impinging on U²³⁵, splits it to produce Barium and Krypton.
Reason: U – 235 is a fissile material.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 2.
Assertion: In a 3 – decay, the neutron number decreases by one.
Reason: In 3 – decay atomic number increases by one.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 3.
Assertion: Extreme temperature is necessary to execute nuclear fusion.
Reason: In a nuclear fusion, the nuclei of the reactants combine releasing high energy.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.

Question 4.
Assertion: Control rods are known as ‘neutron seeking rods’.
Reason: Control rods are used to perform sustained nuclear fission reaction.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

IX. Answer in one or two words (VSA).

Question 1.
Who discovered natural radioactivity?
Answer:
Henri Becquerel

Question 2.
Which radioactive material is present in the ore of pitchblende?
Answer:
Uranium is the radioactive material is present in the ore of pitchblende.

Question 3.
Write any two elements which are used for inducing radioactivity?
Answer:
Boron and aluminium

Question 4.
Write the name of the electromagnetic radiation which is emitted during natural radioactivity.
Answer:
Gamma rays are the electromagnetic radiation which is emitted during natural radioactivity.

Question 5.
If A is a radioactive element which emits an α – particle and produces ₁₀₄Rf²⁵⁹. Write the atomic number and mass number of the element A.
Answer:

Mass number A = 259 + 4 = 263
Atomic number Z = 104 + 2 = 106

Question 6.
What is the average energy released from a single fission process?
Answer:
200 MeV

Question 7.
Which hazardous radiation is the cause for the genetic disease?
Answer:
γ – ray (Gamma-ray) or any high energy nuclear particle passes through a human being, it disrupts the entire normal functioning of the biological system and the effect may be an either pathological or genetic disease.

Question 8.
What is the amount of radiation that may cause death of a person when exposed to it?
Answer:
600 R.

Question 9.
When and where was the first nuclear reactor built?
Answer:
The first nuclear reactor was built in 1942 at Chicago, USA.

Question 10.
Give the SI unit of radioactivity.
Answer:
The SI unit of radioactivity is becquerel.

Question 11.
Which material protects us from radiation?
Answer:
Lead

X. Answer the following questions in a few sentences.

Question 1.
Write any three features of natural and artificial radioactivity.
Answer:

Question 2.
Define critical mass.
Answer:
The minimum mass of fissile material necessary to sustain the chain reaction is called ‘critical mass (m_c)’. It depends on the nature, density and the size of the fissile material.

Question 3.
Define one roentgen.
Answer:
One roentgen is defined as the quantity of radioactive substance which produces a charge of 2.58 × 10^-4 coulomb in 1 kg of air under standard conditions of pressure, temperature and humidity.

Question 4.
State Soddy and Fajan’s displacement law.
Answer:
(i) When a radioactive element emits an alpha particle, a daughter nucleus is formed whose mass number is less by 4 units and the atomic number is less by 2 units, than the mass number and atomic number of the parent nucleus.

(ii) When a radioactive element emits a beta particle, a daughter nucleus is formed whose mass number is the same and the atomic number is more by 1 unit, than the atomic number of the parent nucleus.

Question 5.
Give the function of control rods in a nuclear reactor.
Answer:
Control rods are used to control the number of neutrons in order to have a sustained chain reaction. Mostly boron or cadmium rods are used as control rods. They absorb the neutrons.

Question 6.
In Japan, some of the newborn children are having congenital diseases. Why?
Answer:
In Japan, there was a leakage of nuclear radiations in some areas. In those areas, if the new born children handled with careless they are exposed to harmful radiations then they have congenital diseases.

Question 7.
Mr. Ramu is working as an X – ray technician in a hospital. But, he does not wear the lead aprons. What suggestion will you give to Mr. Ramu?
Answer:
The intensity of X-rays is very low. So, X-rays do not produce any severe effects. There are certains clothes that can be used while operating X-ray machines. Ramu can use them and so he may not be severely affected by X-rays, he should avoid eating and drinking when he is working with X-rays.

Question 8.
What is stellar energy?
Answer:
Fusion reaction that takes place in the cores of the Sun and other stars results in an enormous amount of energy, which is called stellar energy.

Question 9.
Give any two uses of radio isotopes in the field of agriculture?
Answer:
The radio isotope of phosphorous (P-32) helps to increase the productivity of crops. The radiations from the radio isotopes can be used to kill the insects and parasites and prevent the wastage of agricultural products.

Question 10.
What is stellar energy?
Answer:
Fusion reaction that takes place in the cores of the Sun and other stars results in an enormous amount of energy, which is called as stellar energy.

XI. Answer the following questions in detail.

Question 1.
Explain the process of controlled and uncontrolled chain reactions.
Answer:
(i) Controlled chain reaction: In the controlled chain reaction the number of neutrons released is maintained to be one. This is achieved by absorbing the extra neutrons with a neutron absorber leaving only one neutron to produce further fission. Thus, the reaction is sustained in a controlled manner. The energy released due to a controlled chain reaction can be utilized for constructive purposes. Controlled chain reaction is used in a nuclear reactor to produce energy in a sustained and controlled manner.

(ii) Uncontrolled chain reaction: In the uncontrolled chain reaction the number of neutrons multiplies indefinitely and causes fission in a large amount of the fissile material. This results in the release of a huge amount of energy within a fraction of a second. This kind of chain reaction is used in the atom bomb to produce an explosion.

Question 2.
Compare the properties of alpha, beta and gamma radiations.
Answer:

Question 3.
What is a nuclear reactor? Explain its essential parts with their functions.
Answer:
A Nuclear reactor is a device in which the nuclear fission reaction takes place in a self-sustained and controlled manner to produce electricity.
Components of a nuclear reactors:
The essential components of a nuclear reactor are

1. fuel,
2. moderator,
3. control rod,
4. coolant and
5. protection wall.

1. Fuel : A fissile material is used as the fuel. The commonly used fuel material is uranium.
2. Moderator : A moderator is used to slow down the high energy neutrons to provide slow neutrons. Graphite and heavy water are the commonly used moderators
3. Control rod : Control rods are used to control the number of neutrons in order to have sustained chain reaction. Mostly boron or cadmium rods are used as control rods. They absorb the neutrons.
4. Coolant : A coolant is used to remove the heat produced in die reactor core, to produce steam. This steam is used to run a turbine in order to produce electricity. Water, air and helium are some of the coolants.
5. Protection wall : A thick concrete lead wall is built around the nuclear reactor in order to prevent the harmful radiations from escaping into the environment.

XII. HOT Questions.

Question 1.
The mass number of a radioactive element is 232 and its atomic number is 90. When this element undergoes certain nuclear reactions, it transforms into an isotope of lead with a mass number 208 and an atomic number 82. Determine the number of alpha and beta decay that can occur.
Answer:
\(_{90} \mathrm{x}^{232} \stackrel{4 \beta}{\longrightarrow} 94^{\mathrm{Y}^{232}+4_{-4} \mathrm{e}^{\circ}}\) (4β decay)
From the result of β decay,
\(94^{232} \stackrel{6 \alpha}{\longrightarrow} 82^{\mathrm{Pb}^{208}+6}_{} \mathrm{He}^{4}\) (6α decay)
The number of α decay = 6
The number of β decay = 4.

Question 2.
‘X – rays should not be taken often’. Give the reason.
Answer:
X-rays have some low intensity. Even then if a person undergoes the exposure of X-ray, his skin may be affected. The tissues near by the bones may be damaged.

Question 3.
Cell phone towers should be placed far away from the residential area – why?
Answer:
From the cell phone towers micro-waves are scattered for a particular area. This may affect small children and aged people. If people are exposed with those rays very often then they may be severly affected.

Samacheer Kalvi 10th Science Nuclear Physics Additional Important Questions and Answers

I. Choose the correct answer.

Question 1.
The elements that undergo spontaneous radioactivity:
(a) Uranium
(b) Radium
(c) Uranium and Radium
(d) None of the above
Answer:
(c) Uranium and Radium

Question 2.
The artificial (or) induced radioactive element is _____.
(a) Uranium
(b) Boron
(c) Radium
(d) none of these.
Answer:
(b) boron

Question 3.
The nucleons in a nucleus are attracted by:
(a) electrostatic force
(b) gravitational force
(c) nuclear force
(d) magnetic force
Answer:
(c) nuclear force

Question 4.
In p decay by one.
(a) mass number decreases
(b) atomic number decreases
(c) neutron number decreases
(d) proton number decreases
Answer:
(c) neutron number decreases

Question 5.
The charge of the α rays _____.
(a) 2e
(b) -e
(c) 0
(d) none of these.
Answer:
(a) 2e

Question 6.
In which process positron is emitted?
(a) natural radioactivity
(b) artifical radioactivity
(c) nuclear fission
(d) nuclear fussion
Answer:
(b) artifical radioactivity

Question 7.
The atomic number of the elements that exhibit natural radioactivity is:
(a) less than 83
(b) more than 83
(c) more than 42
(d) more than 82
Answer:
(b) more than 83

Question 8.
The ionising power of the α rays _____.
(a) 100 times greater than the β rays
(b) 1000 times greater than the γ rays
(c) very less ionization
(d) both (a) and (b).
Answer:
(d) both (a) and (b).

Question 9.
In the reaction  is:
(a) ₆C¹³
(b) ₆C¹²
(c) ₇N¹³
(d) ₈O¹⁶
Answer:
(b) ₆C¹²

Question 10.
Ionising power of β rays _____.
(а) 100 times greater than α rays
(b) 100 times less than α rays
(c) comparatively very less ionization power
(d) 1000 times less than γ rays.
Answer:
(b) 100 times less than α rays

Question 11.
During α – decay the mass number of the daughter element is:
(a) more by 2 units
(b) less by 2 units
(c) more by 4 units
(d) less by 4 units
Answer:
(d) less by 4 units

Question 12.
When α – particle is emitted the atomic number of daughter element is:
(a) more by 4 units
(b) less by 4 units
(c) less by 2 units
(d) more by 2 units
Answer:
(c) less by 2 units

Question 13.
Which power has more penetrating power?
(a) α rays
(b) γ rays
(c) β rays
(d) X rays.
Answer:
(b) γ rays

Question 14.
What is the charge of alpha particle?
(a) -e
(b) +e
(c) zero
(d) +2e^–
Answer:
(d) +2e^–

Question 15.
Which of the following has speed from 1/10 to 1/20 times the speed of light?
(a) β
(b) α
(c) γ
(d) all the above
Answer:
(b) α

Question 16.
In α – decay _____.
(a) atomic number decreases by 2 and the mass number decreases by 4
(b) atomic number increases by 2 and the mass number decrease by 4
(c) there is no change in atomic and mass number
(d) neutron number decreases by one.
Answer:
(a) atomic number decreases by 2 and the mass number decreases by 4

Question 17.
Which of the following is a fertile material?
(a) Thorium – 232
(b) Uranium – 238
(c) Plutonium – 240
(d) All the above
Answer:
(d) All the above

Question 18.
If the mass of the fissile material is less than the critical mass, then it is termed as:
(a) supercritical
(b) critical
(c) subcritical
(d) none of the above
Answer:
(b) critical

Question 19.
1 curie is equal to _____.
(a) the radioactivity of 1 gram of uranium
(b) 1 decay/second
(c) 3.7 × 10¹⁰ becquerel
(d) 1.6 × 10¹² decay / second.
Answer:
(c) 3.7 × 10¹⁰ becquerel

Question 20.
During nuclear fusion which of the following are emitted:
(a) alpha rays
(b) positrons
(c) neutrons
(d) all the above
Answer:
(d) all the above

Question 21.
Anaemia can be diagonised by:
(a) ₁₅P³²
(b) ₂₆Fe⁵⁹
(c) ₁₁Na²⁴
(d) ₂₈Fe⁵⁹
Answer:
(b) ₂₆Fe⁵⁹

Question 22.
I – 131 is used in the treatment of _____.
(a) cancer
(b) skin disease
(c) disease in the thyroid gland
(d) tumour.
Answer:
(c) disease in the thyroid gland

Question 23.
In which decay atomic number of daughter element is increased by 1 unit?
(a) α – decay
(b) β – decay
(c) γ – decay
(d) neutron decay
Answer:
(b) β – decay

Question 24.
in nuclear fusion ………… is satisfied.
(a) law of conservation of energy
(b) law of conservation of momentum
(c) law of conservation angular momentum
(d) mass energy relation
Answer:
(d) mass energy relation

Question 25.
The safe limit of receiving the radiation is about _____.
(a) 100 R
(b) 600 R
(c) 250 R
(d) 250 mR per week.
Answer:
(d) 250 mR per week.

Question 26.
Hydrogen bomb is based on the principle of:
(a) natural radioactivity
(b) induced radioactivity
(c) nuclear fusion
(d) nuclear fission
Answer:
(c) nuclear fusion

Question 27.
Uncontrolled chain reaction yields _____.
(a) nuclear reactor
(b) atom bomb
(c) hydrogen bomb
(d) breeder reactor.
Answer:
(b) atom bomb

Question 28.
In the following reaction.
₁H³ + ₁H² → X + Y + energy X and Y are:
(a) ₂He³, ₀n¹
(b) ₂He⁴, ₀n¹
(c) ₁H², ₀n¹
(d) ₁H³, ₀n¹
Answer:
(b) ₂He⁴, ₀n¹

Question 29.
The number of α and ß particles emitted when ₉₂U²³⁸ decays to ₈₂Pb²⁰⁶ are respectively:
(a) 6, 8
(b) 8, 6
(c) 4, 3
(d) 3, 4
Answer:
(b) 8, 6

Question 30.
The fusion process can be carried out only at a temperature of _____.
(a) 1000°C
(b) 100°C
(c) 104°C
(d) 107 K.
Answer:
(d) 107 K.

Question 31.
Which of the following is used to cure goiter?
(a) Na²⁴
(b) I¹³¹
(c) P³²
(d) Fe⁵⁹
Answer:
(b) I¹³¹

Question 32.
Which radio isotope is used to check the function of heart?
(a) Na²⁴
(b) Fe⁵⁹
(c) Co⁶⁰
(d) I¹³¹
Answer:
(a) Na²⁴

Question 33.
The fuel of the prototype fast breeder reactor is _____.
(a) low enriched uranium
(b) carbides of uranium
(c) high enriched uranium
(d) oxides of plutonium and uranium.
Answer:
(d) oxides of plutonium and uranium.

Question 34.
Which radio isotope is used as a smoke detector?
(a) Cf²³²
(b) I¹³¹
(c) Co⁶⁰
(d) Am²⁴¹
Answer:
(d) Am²⁴¹

Question 35.
The control rod used in a nuclear reactor is _____.
(a) barium
(b) carbon
(c) cadmium
(d) Na.
Answer:
(c) cadmium

II. Fill in the blanks.

1. Radium was discovered by ………..
2. The photoelectric effect is an instantaneous process Natural radioactivity is a ………..
3. The elements with atomic number ……… undergo spontaneous radioactivity.
4. In natural radioactivity emission of radiation is due to ………. of a nucleus.
5. One disintegration per second is equal to ………..
6. S.I unit of radioactivity is ………….
7. The speed of ………. can go upto 9/10 times the velocity of light.
8. α ray is …………
9. ……….ray consists of photons.
10. ………… and ………… are deflected by electric and magnetic fields.
11. When uranium decays into thorium ……….. particle is emitted.
12. In ………… decay there is no change in the mass number of the product nuclear.
13. The minimum mass of a fissile material necessary to sustain the chain reaction is called …………
14. The value of 1MeV in joules is ………..
15. In the transformation ₁H² + ₁H² → X + energy. X is …………
16. Einstein’s mass energy relation is ………….
17. ……….causes the mutation in the human gene.
18. ……….. is also used in treatment of skin cancer.
19. The safe limit for receiving the radiation is ………….
20. The substances that are used as coolants are ………….. and
21. ………… reactors convert non-fissionable material units.
22. The expansion of BARC is ………….
23. The number of nuclear reactor that are operating in India are ……………
24. Identify X in the following transformation ₁₂Mg²⁴ + ₀n¹ → X + ₁n¹. X is ………….
25. In the reaction ₉₂U²³⁸ + ₀n¹ → ₉₃NP²³⁹ + X. X is ………….
Answer:
1. Marie Curie and pierre Curie
2. Spontaneous
3. more than 83
4. self-disintegration
5. Becquerel
6. Becquerel
7. β rays
8. a helium nucleus
9. Gamma
10. Alpha, beta
11. alpha
12. beta
13. critical mass
14. 1.602 × 10^-13 J
15. ₂He⁴
16. E = mc²
17. Gamma radiation
18. Radio-gold Au¹⁹⁸
19. 100 mR per week
20. Water, air and helium
21. Breeder
22. Bhaba Atomic Research Centre
23. 22
24. ₁₁Na²⁴
25. _-1e⁰

III. State whether the following statements are true or false: If false, correct the statement.

1. Artificial radioactivity is induced in the elements like boron, aluminum etc.
2. Natural radioactivity can be controlled.
3. 1 Rd = 3.7 × 10¹⁰ disintegrations / second.
4. The S.I units of radioactivity is roentgen.
5. The charge of each beta particle is – e
6. Beta ray travels with velocity of light.
7. Example for alpha decay is ₉₂U²³⁸ → ₉₀Th²³⁴ + ₂He⁴
8. Otto Hann and Strassman discovered nuclear fission.
9. In the mass of the fissile material is more than the critical mass it is termed as supercritical.
10. Hydrogen bomb is based on uncontrolled chain reaction.
11. 1eV = 1.602 × 10^-16 Joule.
12. Hydrogen is based on nuclear fusion.
13. Positrons are emitted in nuclear fusion.
14. To diagnose anaemia P³² is used.
15. Radio phosphorous is used in the treatment of skin diseases.
16. To prevent the leakage of nuclear radiation concrete wall with lead lining is used.
Answer:
1. True
2. False – Artificial radio activity can be controlled.
3. False – 1 curie = 3.7 × 10¹⁰⁶ disintegrations / second.
4. False – The S.l unit of radioactivity is Becquerel.
5. True
6. False – Gamma ray travels with velocity of light.
7. True
8. True
9. True
10. False – Atom bomb is based on uncontrolled chain reaction.
11. False – 1eV = 1.602 × 10^-9 Joule
12. True
13. True
14. False – To diagonise aneamia Fe⁵⁹ is used.
15. True
16. True
17. True

IV. Match the following.

Question 1.
Match the Column I with Column II.

Answer:
(a) – (iii)
(b) – (iv)
(c) – (v)
(d) – (i)

Question 2.
Match the Column I with Column II.

Answer:
(a) – (iv)
(b) – (v)
(c) – (ii)
(d) – (i)

Question 3.
Match the Column I with Column II.

Answer:
(a) – (v)
(b) – (iv)
(c) – (i)
(d) – (ii)

V. Numerical problems.

Question 1.
A radioactive isotope emits radiation of 7.4 × 10⁴ G Bq per second. Convert this disintegration in terms of curie.
Answer:
One curie = 3.7 × 10¹⁰ Becquerel
Becquerel (1 Bq) = One disintegration / second
∴ 1 Bq = \(\frac{1}{3.7×10^{10}}\) curie
∴ 7.4 × 10⁴ G Bq
= 7.4 × 10⁴ × 10⁹ × \(\frac{1}{3.7×10^{10}}\)
= 2 × 10³ curie
= 2,000 curie

Question 2.
The isotope ₉₂U²³⁸ successfully undergoes three α – decays and two β – decays. What is the resulting isotope?
Answer:
Number and nature of decays = 3α and 2β
Atomic number of isotope is Z = 92
Mass number of isotope is A = 238
Resulting isotope:
After the emission of 3α particles atomic number
Z’ = Z = (3 × 2)
= Z – 6
= 92 – 6
Z’ = 86
After the emission of 2β particles atomic number
Z” = Z – 2 (-1) = 86 + 2 = 88
Mass number after the emission of 3α particles
A’ = A – 3α
= 238 – 3(4)
= 238 – 12
= 226
Mass number after the emission of 2β particles
A” = A’ – 2(0)
= 226
∴ Resulting isotope is ₈₈Ra²²⁶

Question 3.
₈₈Ra²²⁶ experiences one α – decay and one β – decay. Calculate the number of neutrons in the final daughter nucleus that is formed.
Answer:
α particle = ₂He⁴
Atomic number of α particle = 2
Mass number of α particle = 4

Number of neutrons = Mass number – atomic number
= 222 – 87 = 135

Question 4.
State the number of protons, electrons neutrons and nucleons in ₄Be⁹ atom.
Answer:
Atomic number of ₄Be⁹ atom Z = 4
Mass number of ₄Be⁹ atom A = 9
Number of protons = Atomic number Z = 4
Number of neutrons = A – Z = 9 – 4 = 5
Number of nucleons = A = 9

Question 5.
Determine X and Y in the following transformations.
(i) ₄Be⁹ + α → X
(ii) ₉₂U²³⁵ + ₀n¹ → ₅₀Ba¹⁴¹ + Y + 3₀n¹
Answer:
(i) ₄Be⁹ + ₂He⁴ → ₆C¹³ [α = ₂He⁴]
∴ X = ₆C¹³

(ii) ₉₂U²³⁵ + ₀n¹ → ₅₀Ba¹⁴¹ + Y + 3₀n¹
Equating atomic number on both sides we get,
235 + 1 = 141 + A + 3
236 = 144 + A
∴ A = 236 – 144
= 92
Equating atomic number on both sides are get
92 + 0 = 56 + 2 + 0
Z = 92 – 56 = 36
∴ Y is ₃₆Kr⁹²

Question 6.
Calculate the amount energy released when a radioactive element undergoes fusion and results in a mass defect of 4g.
Answer:
Velocity of light = 3 × 10⁸ m/s
Mass defect Δm = 4 × 10^-3
By Einstein’s equation, energy released
E = mC²
= (4 × 10^-3) × (3 × 10⁸)²
= 36 × 10¹³ J
= 3.6 × 10¹⁴ J

Question 7.
Identify the radio isotopes in the following reactions.
Answer:
(i) ₁₅P⁸ + ₀n¹ → X + γ
(ii) ₀n¹ → _ZY^A + _-1e⁰ + γ^–
Answer:
(i) ₁₅P³¹ + ₀n¹ → X + γ
Mass number of X = 31 + 1 = 32
Atomic number of Y= 15 + 0 =15
∴ X is ₁₅P³¹

(ii) ₀n¹ → _ZY^A + _-1e⁰ + γ^–
Mass number 1 = A + 0
∴ A = 1
Atomic number 0 = Z – 1
∴ Z = 1
_ZY^A is ₁H¹

VI. Assertion and reason type questions.

Question 1.
Assertion: Natural radioactivity is a spontaneous process.
Reason: It cannot be controlled.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 2.
Assertion: In artificial radioactivity neutron and positron are emitted. Reason: It can be controlled.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.

Question 3.
Assertion: p rays are electrons.
Reason: p rays travel with speed of light.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(c) If the assertion is true, but the reason is false.

Question 4.
Assertion: Gamma rays have maximum ionising power.
Reason: Alpha rays have low penetrating power.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(d) If the assertion is false, but the reason is true.

Question 5.
Assertion: Critical mass of a fissile material is the mass necessary to sustain chain reaction.
Reason: Critical mass depends on the nature, density and size of the fissile material.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(c) If the assertion is true, but the reason is false.

Question 6.
Assertion: Nuclear fusion takes place in the cores of the sun and other stars.
Reason: Nuclear fusion is called as thermonuclear reaction.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 7.
Assertion: An alpha particle carries double the positive charge of protons.
Reason: The charge of alpha particle is equal to charge on the helium nucleus.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

Question 8.
Assertion: Gamma rays are electromagnetic waves.
Reason: Gamma rays travel with speed of light.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.
Answer:
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

VII. Answer in one or two words (VSA).

Question 1.
Who discovered the nucleus?
Answer:
Rutherford

Question 2.
Define ‘Natural Radioactivity’.
Answer:
This phenomenon of spontaneous emission of radiation from certain elements on their own is called ‘Natural radioactivity’.

Question 3.
State elements exhibiting radioactivity with atomic number less than 83.
Answer:
Uranium and radium

Question 4.
What is the nature of radioactive substances?
Answer:
They are earth metals and transition metals.

Question 5.
Define ‘One Rutherford (Rd)’.
Answer:
It is another unit of radioactivity. It is defined as the quantity of a radioactive substance, which produces 106 disintegrations in one second.
1 Rd = 10⁶ disintegrations per second.

Question 6.
In ₄Be⁹ + ₂He⁴ → X. What is X?
Answer:
X is ₆C¹³

Question 7.
What is the value of 1 curie?
Answer:
1 curie = 3.7 × 10¹⁰ disintegrations / second.

Question 8.
State the value of Rutherford.
Answer:
1 Rutherford = 10⁶ disintegrations / second.

Question 9.
Explain the term ‘fissile material’ Give an example.
Answer:
Fissionable material is a radioactive element, which undergoes fission in a sustained manner when it absorbs a neutron. It is also termed as ‘fissile material’.
E.g. U²³⁵, plutonium (Pu²³⁹ and Pu²⁴¹)

Question 10.
Which ray has greatest ionising power?
Answer:
Alpha ray

Question 11.
Which ray posses minimum ionising power?
Answer:
Gamma ray

Question 12.
Which ray is not deflected by electric and magnetic fields?
Answer:
Gamma ray

Question 13.
Name the ray that travels with speed about 9/10 times that of light?
Answer:
Beta ray

Question 14.
What is the charge of particle?
Answer:
It’s charge is +2e.

Question 15.
Which particle has a charge of -e?
Answer:
Beta particle

Question 16.
State that the ray consisting of protons.
Answer:
Gamma ray

Question 17.
When uranium emits an alpha particle which element is obtained as daughter element.
Answer:
Thorium ₉₀Th²³⁴

Question 18.
Mention the value of 1eV in terms of joule.
Answer:
1eV = 1.602 × 10^-19 joule

Question 19.
What is the value of 1Mev?
Answer:
1MeV = 10⁶eV = 1.602 × 10^-13 joule

Question 20.
Which radio isotope is used in the treatment of skin diseases?
Answer:
Radio Phosphorus P³²

Question 21.
What is the use of radio iodine?
Answer:
Radio iodine is used to cure goiter.

Question 22.
Which isotope is used in airlines?
Answer:
Califorium Cf²³² is used in airlines.

Question 23.
State the isotope used as a smoke detector.
Answer:
Americium Am²⁴¹

Question 24.
Write down the uses of a nuclear reactor.
Answer:
Uses of a nuclear reactor

• Nuclear reactors are widely used in power generation.
• They are also used to produce radioisotopes, which are used in a variety of applications
• Some reactors help us to do research in the field of nuclear physics.
• Breeder reactors are used to convert non-fissionable materials into fissionable materials.

Question 25.
What are gamma rays?
Answer:
Gamma rays are electromagnetic waves consisting of photons.

Question 26.
Who discovered Cathode rays.
Answer:
J.J. Thomson

VIII. Answer the following question in few sentences.

Question 1.
What is radioactivity?
Answer:
The phenomenon of nuclear decay of certain elements with the emission of radiations like alpha, beta, and gamma rays is called ‘radioactivity’.

Question 2.
What is meant by natural radioactivity?
Answer:
This phenomenon of spontaneous emission of radiation from certain elements on their own is called ‘natural radioactivity’.

Question 3.
Define Rutherford.
Answer:
It is defined as the quantity of a radioactive substance, which produces 106 disintegrations in one second.
1 Rd = 10⁶ disintegrations per second.

Question 4.
What is the unit of radioactivity? Define it.
Answer:
The SI unit of radioactivity is becquerel. It is defined as the quantity of one disintegration per second.

Question 5.
Define nuclear fission. State an example.
This process of breaking (splitting) up of a heavier nucleus into two smaller nuclei with the release of a large amount of energy and a few neutrons is called ‘nuclear fission’.
Eg: Nuclear fission of a uranium nucleus (U²³⁵)
₉₂U²³⁵ + ₀n¹ → ₅₆Ba¹⁴¹ + ₃₆Kr⁹² + 3₀n¹ + Q (energy)

Question 6.
How a product nucleus is identified in a nuclear reaction?
Answer:
In a nuclear reaction, the element formed as the product nucleus is identified by the atomic number of the resulting nucleus and not by its mass number.

Question 7.
What is fissile material?
Answer:
A fissionable material is a radioactive element, which undergoes fission in a sustained manner when it absorbs a neutron. It is also termed as ‘fissile material’.
Eg: U²³⁵, plutonium (Pu²³⁹ and Pu²⁴¹)

Question 8.
What are fertile materials? Mention examples.
Answer:
There are some radioactive elements, which can be converted into fissionable material. They are called as fertile materials.
Eg: Uranium – 238, Thorium – 232, Plutonium – 240.

Question 9.
What is the composition of natural uranium?
Answer:
Natural uranium consists of 99.28 % of ₉₂U²³⁸ and 0.72 % of ₉₂U²³⁵.

Question 10.
What is nuclear fusion? State an example.
Answer:
The process in which two lighter nuclei combine to form a heavier nucleus is termed as ‘nuclear fusion’.
Eg: ₁H² + ₁H² → ₂He⁴ + Q (Energy)

Question 11.
What is meant by chain reaction?
Answer:
A chain reaction is a self-propagating process in which the number of neutrons goes on multiplying rapidly almost in a geometrical progression.

Question 12.
What is meant by mass defect?
Answer:
The mass of the daughter nucleus formed during a nuclear reaction (fission and fusion) is lesser than the sum of the masses of the two parent nuclei. This difference in mass is called mass defect.

Question 13.
Nuclear fusion is named as thermonuclear reaction. Why?
Answer:
Nuclear fusion is possible only at an extremely high temperature of the order of 10⁷ to 10⁹ K and a high pressure to push the hydrogen nuclei closer to fuse with each other. Hence, it is named as ‘Thermonuclear reaction’.

Question 14.
What are the uses of radio isotopes in industries?
Answer:

1. An isotope of californium (Cf²⁵²) is used in the airlines to detect the explosives in the luggage.
2. An isotope of Americium (Am²⁴¹) is used in many industries as a smoke detector.

Question 15.
What is the age of Earth?
Answer:
It is nearly 4.54 × 10⁹ years (around 45 Crore 40 lakh years).

Question 16.
What do you know about dosimeter?
Answer:
Dosimeter is a device used to detect the levels of exposure of an ionizing radiation.

Question 17.
What is the function of moderator in a nuclear reactor?
Answer:
A moderator is used to slow down the high energy neutrons to provide slow neutrons. Graphite and heavy water are the commonly used moderators.

Question 18.
How do coolants function in a nuclear reactor?
Answer:
A coolant is used to remove the heat produced in the reactor core, to produce steam. This steam is used to run a turbine in order to produce electricity. Water, air and helium are some of the coolants.

Question 19.
Name some operating reactors in India.
Answer:
Cirus, Dhuruva and Pumima.

Question 20.
Define Curie.
Answer:
Curie is defined as the quantity of a radioactive substance, which undergoes 3.7 × 10¹⁰ disintegrations in one second. This is actually close to the activity of 1 g of radium-226.

IX. Answer the following question in detail.

Question 1.
Write short notes on induced radioactivity.
Answer:
The phenomenon by which even light elements are made radioactive, by artificial or induced methods, is called ‘artificial radioactivity’ or ‘man-made radioactivity’.

This kind of radioactivity was discovered by Irene Curie and F.Joliot in 1934. Artificial radioactivity is induced in certain lighter elements like boron, aluminium etc., by bombarding them with radiations such as ‘alpha particles’ emitted during the natural radioactivity of uranium. This also results in the emission of invisible radiations and elementary” particles. During such a disintegration, the nucleus which undergoes disintegration is called ‘parent nucleus’ and that which is produced after the disintegration is called a ‘daughter nucleus’. The panicle, which is used to induce the artificial disintegration is termed as projectile and the particle which is produced after the disintegration is termed as ejected panicle. When the projectile hits the parent nucleus, it is converted into an unstable nucleus, which in turn decays spontaneously emitting the daughter nucleus along with an ejected particle.

If you denote the parent and daughter nuclei as X and Y respectively, then the nuclear disintegration is represented as follows: X (P,E) Y. Here, P and E represent the projectile particle and ejected particle respectively.
₄Be⁹ + ₂He⁴ → ₆C^13*
₆C^13* → ₆C¹² + ₀n¹
In the above nuclear reaction, ₆C^13* is unstable and is radioactive. This reaction can be represented as ₄Be⁹ (α, n) ₄C¹²
₄Be⁹ + ₂He⁴ → ₆C¹² + ₀n¹

Question 2.
Explain the concept of ‘Hydrogen bomb’.
Answer:
Hydrogen Bomb:

• This releases a huge amount of energy in a very small time interval and leads to a Hydrogen bomb is based on the principle of nuclear fusion.
• A hydrogen bomb is always designed to have an inbuilt atom bomb which creates the high temperature and pressure required for fusion when it explodes.
• Fusion takes place in the hydrogen core and leads to the release of a very large amount of energy in an uncontrolled manner.
• The energy released in a hydrogen bomb (or fusion bomb) is much higher than that released in an atom bomb (or fission bomb).

Question 3.
Explain
(i) alpha decay,
(ii) Beta decay,
(iii) gamma decay
Answer:
(i) Alpha decay : A nuclear reaction in which an unstable parent nucleus emits an alpha particle and forms a stable daughter nucleus, is called, ‘alpha decay’.
Eg: Decay of uranium (U²³⁸) to thorium (Th²³⁴) with the emission of an alpha particle.
₉₂U²³⁸ → ₉₀Th²³⁴ + ₂He⁴ (α – decay)
In α – decay, the parent nucleus emits an a particle and so it is clear that for the daughter nucleus, the mass number decreases by four and the atomic number decreases by two.

(ii) Beta decay : A nuclear reaction, in which an unstable parent nucleus emits a beta particle and forms a stable daughter nucleus, is called ‘beta decay’.
Eg: Beta decay of phosphorous.
₁₅P³² → ₁₆S³² + _-1e⁰(β – decay)
In β – decay there is no change in the mass number of the daughter nucleus but the atomic number increases by one. In a nuclear reaction, the element formed as the product nucleus is identified by the atomic number of the resulting nucleus and not by its mass number.

(iii) Gamma decay: In a γ – decay, only the energy level of the nucleus changes. The atomic number and mass number of the radioactive nucleus remain the same.

Question 4.
What is the principle of atom bomb? Describe its structure.
Answer:
The atom bomb is based on the principle of uncontrolled chain reaction. In an uncontrolled chain reaction, the number of neutrons and the number of fission reactions multiply almost in a geometrical progression. This releases a huge amount of energy in a very small time interval and leads to an explosion.

Structure : An atom bomb consists of a piece of fissile material whose mass is subcritical. This piece has a cylindrical void. It has a cylindrical fissile material which can fit into this void and its mass is also subcritical. When the bomb has to be exploded, this cylinder is injected into the void using a conventional explosive. Now, the two pieces of fissile material join to form the supercritical mass, which leads to an explosion. The structure of an atom bomb.

During this explosion tremendous amount of energy in the form of heat, light and radiation is released. A region of very high temperature and pressure is formed in a fraction of a second along with the emission of hazardous radiation like y rays, which adversely affect the living creatures. This type of atom bombs were exploded in 1945 at Hiroshima and Nagasaki in Japan during the World War II.

Question 5.
What precautions are to he took for those, who are working in radiation laboratories?
Answer:

1. Radio – Iodine (I¹³¹) is used to cure goitre.
2. Radioactive materials should be kept in a thick-walled lead container.
3. Lead coated aprons and lead gloves should be used while working with hazardous radioactive materials.
4. We should avoid eating while handling radioactive materials.
5. The radioactive materials should be handled only by tongs or by a remote control device.
6. Dosimeters should be worn by the users to check the level of radiation.

Question 6.
What do you know about hydrogen bomb?
Answer:
Hydrogen bomb is based on the principle of nuclear fusion. A hydrogen bomb is always designed to have an inbuilt atom bomb which creates the high temperature and pressure required for fusion when it explodes. Then, fusion takes place in the hydrogen core and leads to the release of a very large amount of energy in an uncontrolled manner. The energy released in a hydrogen bomb (or fusion bomb) is much higher than that released in an atom bomb (or fission bomb).

Question 7.
What are the applications of radio isotopes in medicine?
Answer:
Medical applications of radio isotopes can be divided into two parts:

1. Diagnosis
2. Therapy

Radio isotopes are used as tracers to diagnose the nature of circulatory disorders of blood, defects of bone metabolism, to locate tumors, etc., Some of the radio isotopes which are used as tracers are: hydrogen, carbon, nitrogen, sulphur, etc.

1. Radio-sodium (Na²⁴) is used for the effective functioning of heart.
2. Radio-Iodine (I¹³¹) is used to cure goiter.
3. Radio-iron is (Fe⁵⁹) is used to diagnose anaemia and also to provide treatment for the same.
4. Radio-phosphorous (P³²) is used in the treatment of skin diseases.
5. Radio-cobalt (Co⁶⁰) and
6. Radio-gold (Au¹⁹⁸) are used in the treatment of skin cancer.
7. Radiations are used to sterilize the surgical devices as they can kill the germs and microbes.

Question 8.
Mention the applications of radio isotopes in agriculture and industries and archeological research.
Answer:
Agriculture : The radio isotope of phosphorous (P-32) helps to increase the productivity of crops. The radiations from the radio isotopes can be used to kill the insects and parasites and prevent the wastage of agricultural products. Certain perishable cereals exposed to radiations remain fresh beyond their normal life, enhancing the storage time. Very small doses of radiation prevent sprouting and spoilage of onions, potatoes and gram.

Industries : In industries, radioactive isotopes are used as tracers to detect any manufacturing defects such as cracks and leaks. Packaging faults can also be identified through radio activity. Gauges, which have radioactive sources are used in many industries to check the level of gases, liquids and solids.

1. An isotope of californium (Cf ²⁵²) is used in the airlines to detect the explosives in the luggage.
2. An isotope of Americium (Am²⁴¹) is used in many industries as a smoke detector.

Archeological research : Using the technique of radio carbon dating, the age of the Earth, fossils, old paintings and monuments can be determined. In radio carbon dating, the existing amount of radio carbon is determined and this gives an estimate about the age of these things.

Question 9.
Compare the features of nuclear fission with nuclear fusion.
Answer:

Question 10.
Mention the preventive measures to be followed while working with radioactive materials.
Answer:
Radioactive materials should be kept in a thick walled lead container.

1. Lead coated aprons and lead gloves should be used while working with hazardous radioactive materials.
2. You should avoid eating while handling radioactive materials.
3. The radioactive materials should be handled only by tongs or by a remote control device.
4. Dosimeters should be worn by the users to check the level of radiation.

Question 11.
Write a note on nuclear power plants in India.
Answer:
Indian Atomic Energy Commission (AEC) was established in August 1948 by the Department of Indian Scientific Research committee at Bombay (now Mumbai) in Maharashtra. It is the nodal agency for all the research done in the field of atomic energy. Dr. Homi Jahangir Bhaba was the first chairman of Indian Atomic Energy Commission. Now, it is known as Bhaba Atomic Research Centre (BARC).

Nuclear power is the fifth largest source of power in India. Tarapur Atomic Power Station is India’s first nuclear power station. Now, there are a total of seven power stations, one each in Maharashtra, Rajasthan, Gujarat, Uttar Pradesh and two in Tamilnadu. In Tamilnadu, we have nuclear power stations in Kalpakkam and Kudankulam. Apsara was the first nuclear reactor built in India and Asia. Now, there are 22 nuclear reactors which are operating in India. Some other operating reactors are

1. Cirus
2. Dhuruva
3. Pumima

Question 12.
Distinguish (i) atom bomb from Nuclear reactor,
(ii) Nuclear fission from Nuclear fusion.
Answer:
(i) atom bomb from nuclear reactor:

(ii) Nuclear fission from Nuclear fusion

X. Hot Questions.

Question 1.
A neutron is most effective as bulet in nuclear reactions. Why?
Answer:
This is because a neutron carries no charge. It can hit the nucleus directly without being repelled or attracted by the nucleus or electrons.

Question 2.
Why is \({ _{ 92 } }U^{ 238 }\) not suitable for chain reaction?
Answer:
Only fast-moving neutrons of 12 MeV can cause fission of \({ _{ 92 } }U^{ 238 }\) nuclei. But such neutron has fewer chances of interaction. They escape the fissionable material without causing fission.

Question 3.
Why cadmium is used as control rods in the nuclear reactor?
Answer:
As Cadmium has a high cross section for absorption of neutrons, cadmium is used as control rod.

Question 4.
Why is nuclear fusion not possible in a laboratory (or) Why is nuclear fusion difficult to carry out?
Answer:
Nuclear fusion requires a very high temperature of 10⁶ – 10⁷ K. This temperature is attained by causing an explosion due to the fission process. Moreover, no solid container can withstand such a high temperature.

Question 5.
Why is the penetrating power of a – particle is less than that of β – particle?
Answer:
Ionising power is directly proportional to kinetic energy that varies directly as mass of particle and square of its velocity. Hence ionising power of an alpha particle is more than that of β particle.

Question 6.
Why heavy water is used to slow down the fast moving neutrons?
Answer:
Since heavy water (D₂O) is rich in hydrogen, it is used to slow down the fast moving neutrons.

Question 7.
The penetrating power of α – particle is less than that of β – particle – Why?
Answer:
(i) Penetrating power varies inversely as mass of the particle. But mass of alpha particles is very much greater than mass of beta particles.
(ii) Hence, penetrating power of α – particle is less than that of β – particles.

Question 8.
What are the units of activity of radio active elements?
Answer:
1 curie = 3.7 × 10¹⁰ disintegrations / second
1 rutherford = 10⁶ disintegrations / second

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TN State Board 12th Commerce Model Question Paper 1 English Medium

Instructions:

1. The question paper comprises of four parts.
2. You are to attempt all the parts. An internal choice of questions is provided wherever applicable.
3. All questions of Part I, II. III and IV are to be attempted separately.
4. Question numbers 1 to 20 in Part I are Multiple Choice Questions of one mark each. These are to be answered by choosing the most suitable answer from the given four alternatives and writing the option code and the corresponding answer.
5. Question numbers 21 to 30 in Part II are two-mark questions. These are to be answered in about 50 words.
6. Question numbers 31 to 40 in Part III are three-mark questions. These are to be answered in about 150 words.
7. Question numbers 41 to 47 in Part IV are five-mark questions. These are to be answered in about 250 words. Draw diagrams wherever necessary.

Time: 3 Hours
Max Marks: 90

Part -I

Choose the correct answer. Answer all the questions: [20 x 1 = 20]

Question 1.
A marketable document of title to a time deposit for a specified period may be referred to as a ……………
(a) Treasury Bill
(b) Certificate of Deposit
(c) Commercial Bill
(d) Government Securities
Answer:
(b) Certificate of Deposit

Question 2.
The rules and regulations of Stock exchange is framed by………….. guidelines.
(a) RBI
(b) Central Government
(c) SEBI
(d) BSE
Answer:
(c) SEBI

Question 3.
……….. was the first company to trade its shares in Demat form.
(a) Tata Industries
(b) Reliance Industries
(c) Infosys
(d) Birla Industries
Answer:
(b) Reliance Industries

Question 4.
The purpose of an application blank is to gather information about the
(a) Company
(b) Candidate
(c) Questionnaire or Interview Schedule
(d) Competitors
Answer:
(a) Company

Question 5.
Training methods can be classified into training.
(a) Job rotation and Job enrichment
(b) On the Job and Off the Job
(c) Job analysis and Job design
(d) Physical and mental
Answer:
(b) On the Job and Off the Job

Question 6.
Green Shelter concept was introduced by group:
(a) ACME
(b) Tata
(c) Reliance
(d) ICI
Answer:
(a) ACME

Question 7.
Any person who buys any goods or avails services for personal use, for consideration is called as …………..
(a) Customer
(b) Consumer
(c) Buyer
(d) User
Answer:
(b) Consumer

Question 8.
It is the responsibility of a consumer that he must obtain …………. as a proof for the purchase of goods.
(a) Cash receipt
(b) Warranty card
(c) Invoice
(d) All of these
Answer:
(c) Invoice

Question 9.
The International Organisation of Consumers Unions (IOCU) was first established in …………..
(a) 1960
(b) 1965
(c) 1967
(d) 1987
Answer:
(a) 1960

Question 10.
Unpaid seller can exercise his right of lien over the goods, where he is in possession of the goods as ……………
(a) Owner of goods
(b) Agent of buyer
(c) Bailee for buyer
(d) All of these
Answer:
(d) All of these

Question 11.
Which endorsement relieves the endorser from incurring liability in the event of dishonour?
(a) Restrictive
(b) Facultative
(c) Sans recourse
(d) Conditional
Answer:
(b) Facultative

Question 12
…………….. Entrepreneur Supply Services Unlike.
(a) Hoteliers
(b) Banking
(c) Airlines
(d) Livestock
Answer:
(d) Livestock

Question 13.
Who can issue stock? ‘
(a) Public
(b) Private
(c) One Person
(d) Small
Answer:
(a) Public

Question 14.
A Public Company having a paid up Share Capital of ₹ ……… or more may have a Director, elected by such small shareholders.
(a) One
(b) Three
(c) Five
(d) Seven
Answer:
(c) Five

Question 15.
Who is not entitled to speak at the annual general meeting of the company?
(a) Auditor
(b) Shareholder
(c) Proxy
(d) Directors
Answer:
(c) Proxy

Question 16.
Treasury Bills commands ………………
(a) High Liquidity
(b) Low Liquidity
(c) Medium Liquidity
(d) Limited Liquidity
Answer:
(a) High Liquidity

Question 17
………….. enables small investors to participate in the investment on share capital of large companies.
(a) Mutual Funds
(b) Shares
(c) Debentures
(d) Fixed deposits
Answer:
(a) Mutual Funds

Question 18.
……………… e-recruitment is possible only through facility.
(a) Computer
(b) internet
(c) Broadband
(d) 4G
Answer:
(b) internet

Question 19.
Identify the test that acts as an instrument to discover the inherent ability of a candidate.
(a) Aptitude Test
(b) Attitude Test
(c) Proficiency Test
(d) Physical Test
Answer:
(a) Aptitude Test

Question 20.
Case study method is type of trainee.
(a) Only theoretical training
(b) Both theory and practical training
(c) Hands on training
(d) Observation Training
Answer:
(b) Both theory and practical training

Part – II

Answer any seven questions. Question No. 30 is compulsory. [7 x 2 = 14]

Question 21.
What is meant by innovation?
Answer:
Innovation refers to the preparation of personnel and organisation to face the changes made in the business world. Continuous changes are being made in the business. Innovation includes developing new material, new products, new techniques in production, new package, new design of a product and cost reduction.

Question 22.
Bring out the meaning of MBE.
Answer:
Management By Exception is an important principle of managerial control suggested by the classical writers on management. It is based on the belief that an attempt to control everything results in controlling nothing. Management by exception is a style of business management that focuses on identifying and handling cases that deviate from the norm.

Question 23.
Who are the participants in a Capital Market?
Answer:
There are many players in the capital market. The participants of the capital market include individuals, corporate sectors, Govt., banks and other financial institutions.

Question 24.
Explain the two oldest money markets.
Answer:

• Treasury Bills- These are very popular and enjoy a higher degree of liquidity since they
  are issued by the Government.
• Commercial Bills- It is an instrument drawn by a seller of goods on a buyer of goods.

Question 25.
What is meant by Commodity Exchange?
Answer:
A commodity exchange is an exchange where commodities are purchased and sold. Commodities are listed here: Metals (e.g. gold, silver, copper); Energy (e.g. crude oil, natural gas); Agricultural (e.g. rice, wheat, cocoa); Livestock and meat.

Question 26.
What are the various ID proofs?
Answer:
Proof of identity: PAN card, voter’s ID, passport, driver’s license, bank attestation, IT returns, electricity bill, telephone bill, ID cards with applicant’s photo issued by the central or state government are the ID proofs.

Question 27.
State two features of HRM.
Answer:
Features of Human Resource Management:

• Universally relevant: Human Resource Management has universal relevance.
• Goal oriented: The accomplishment of organisational goals is made possible through best utilisation of human resource in an organisation.

Question 28.
What is promotion?
Answer:
Based on seniority and merits of the employees they are given opportunity to move up in the organisational hierarchy. This is called promotion.

Question 29.
What do you mean by test?
Answer:
Several tests are conducted in the selection process to ensure whether the candidate possesses the necessary qualification to fit into various positions in the organization.

Question 30.
State e-learning method.
Answer:
E-leaming is the use of technological process to access of a traditional classroom or office. It is also often referred to as online learning or web based training.

Part – III

Answer any seven questions. Question No. 40 is compulsory. [7 x 3 = 21]

Question 31.
Explain the types of market on the basis of time.
Answer:

• Very Short Period Market: Markets which deal in perishable goods like, fruits, milk, vegetables, etc., are called as very short period market. There is no change in the supply of goods.
• Short Period Market: In certain goods, supply is adjusted to meet the demand. The demand is greater than supply. Such markets are known as Short Period Market.
• Long Period Market: This type of market deals in durable goods, where the goods and services are dealt for longer period usages.

Question 32.
What are the factors affecting Price of Product?
Answer:
Factors affecting Price of product/service:
(a) Internal Factors:

• Marketing Objectives
• Marketing Mix Strategy
• Organizational considerations
• Costs
• Organization Objectives

(b) External Factors:

• The market and demand
• Competition
• Customers
• Suppliers
• Legal factors
• Regulatory factors.

Question 33.
Elucidate how E-Commerce differs from E-Business.
Answer:
E-commerce simply refers to the buying and selling of products and services through online but E-business goes away beyond the simple buying and selling, of goods and service and much wider range of business processes, such as supply chain management, electronic order processing and customer relationship management.

Question 34.
Define “Consumer Rights”
Answer:
Consumer Right is interpreted as “the right to have information about the quality, potency, quantity, purity, price, and standard of goods or services”.

Question 35.
What is the Pecuniary Jurisdiction of the State Commission?
Answer:
The Jurisdiction of the State Commission is as follows:

• The State Commission can entertain complaints within the territory of entire state and the compensation, if any claimed exceed Rs. 20 lakhs and below Rupees One Crore.
• The State Commission also has the jurisdiction to entertain appeals against the orders of any District Forum within the State.

Question 36.
Write a note on future environment of business.
Answer:

• The future environment of business in this age of rapid technological advancement has been captured aptly.
• It is now important for every business to meet the challenges posed by the environment in order to remain competitive.
• The presence of complex variables impacting business should be understood and alternative measures for solving the issues should be developed.

Question 37.
State any three impacts of Globalization.
Answer:
Impacts of Globalization:

• Corporations got a competitive advantage from lower operating costs, and access to new raw materials and additional markets.
• Multinational corporations (MNCs) can manufacture, buy and sell goods worldwide.
• Globalization has led to a boom in consumer products market.

Question 38.
Discuss in detail the rights of an unpaid seller against the buyer personally.
Answer:
Where the Property in the Goods does not pass to the Buyer. Right of an Unpaid Seller against the Buyer Personally:

• Suit for price
• Suit for Damages for Non-acceptance .
• Suit for Cancellation of the Contract before the Due Date- Where the buyer cancels the contract before the date of delivery, the seller may either treat the contract as continuing or wait till the due date.
• Suit for Interest

Question 39.
Explain the commercial functions of entrepreneur.
Answer:
(i) Production or Manufacturing: Under production function, entrepreneur has to take decision relating to selection of factory site, design and layout, type of products to be manufactured, research and development, product design, etc.

(ii) Marketing: Entrepreneur has to carry out following functions pertaining to marketing
aspect namely consumer research, product planning and development, standardisation, packaging, pricing, warehousing, distribution, promotion, etc.

(iii) Accounting: Entrepreneur has to arrange to prepare trading and profit and loss account in order to know the profit or loss incurred out of operation of the business and prepare balance sheet to know the financial status of business at a particular day. Besides, cash flow and fund flow statements are prepared to ensure the adequacy of funds and cash for meeting various working capital needs of the business.

(iv) Finance: An entrepreneur has to take decisions like choosing the right type of financing, framing the best dividend policy, acquiring of funds, efficiently managing fixed and current assets, maximising shareholders wealth and investing of funds efficiently and effectively.

(v) Human Resource Management: Entrepreneur has to estimate the manpower needs of the enterprise and accordingly organise for recruitment procedure, selecting manpower, induction and training, determining compensation structure and incentives, designing motivation programmes, structuring wellbeing measures for employees, putting in place safety mechanism at workplace, performance evaluation and career advancement and structuring social security programmes.

Question 40.
Explain about the agricultural entrepreneur.
Answer:
Agricultural entrepreneurs are those entrepreneurs who raise farm products and market them. They use the various inputs like labour, fertilizer, insecticide, water technology, etc., to raise the products and market their products either directly or through co-operative entities or through brokers or through tie up with large retailers.

Part – IV

Answer all the following questions. [7 x 5 = 35]

Question 41(a).
What are the duties of a director?
Answer:
Directors act as agents of the shareholders and act as trustees of shareholders. The following are the duties of directors:
Collective Duties of Directors: Directors as a part of Board perform certain duties collectively. The duties are as follows:

• Approval of annual accounts and authentication of annual accounts
• Appointment of First Auditors
• Passing of resolutions at board meetings
• Directors report to shareholders highlighting the performance of the company.

General duties of Directors:

• Delegating power to any committee
• Issuing instructions to employees for implementation of policy
• Appointing their subordinates like Managing director, Manager, Secretary and other employees
• Act in Good faith in order to promote the objectives of the company

[OR]

(b) How market information is helpful to invention of new product in the market?
Answer:
According to Clark and Clark, market information means “all the facts, estimates, opinions and other information used in marketing of goods”.
From the above definition the details about the market may be obtained from conducting market research and other inventory methods. Market research is solely concerned with the collection of information about the market.
The following information may be collected:

• Goods needed by the customers.
• Time and want of the goods
• Quality wanted
• Size of the market
• Means of transport

Use to Invent New product: Adequate and accurate information help in the formulation of policies. Based on the taste and preferences, demand and supply of the products, the company can introduce new product. Also the company has to increase the quality and number of products depending upon the information available.

Question 42.
(a) State the powers of the directors.
Answer:
Powers of Directors: The directors must have powers to carry on objectives of the company.
The powers may be of four types:

• Statutory Powers of Directors
• Managerial Powers of Directors
• Powers only with a resolution
• Other Powers

Statutory Powers: The following powers must be used in the Board meeting:

• Power to make calls on shareholders in respect of money unpaid on their shares
• Power to issue debentures
• Power to borrow money other than on debentures
• Power to invest the funds of the company
• Power to approve financial statement and Board report

Managerial Powers:

• Power to allot, forfeit or transfer shares of company
• Power to decide the terms and conditions to issue debentures
• Power to appoint Managing Director, Manager and Secretary of the company.

Powers only with a resolution:

• To sell or lease any asset of the company
• To issue bonus shares
• To allow time to the director for repayment of the loan

Other Powers:

• Power to fill casual vacancy
• Power to appoint the first auditor of the company
• Power to appoint alternative directors, additional directors
• Power to remove key managerial personnel

[OR]

(b) Write about the contribution of Drucker to management.
Answer:
“Management is a multipurpose organ that manages a business and manages manager, and manages worker and work.”— Peter F. Drucker: The Practice of Management.
Drucker stresses three jobs of management:

• Managing a business;
• Managing manager; and
• Managing workers and work.

Even if one is omitted, It would not have management anymore and it also would’not have a business enterprise or an industrial society. According to P. Drucker, the manager has to balance and integrate three major jobs of a business enterprise as mentioned above. Hence, a manager is a dynamic and life-giving element in every business. Without efficient management it cannot be possible to secure the best allocation and utilisation of human, material and financial resources.

Question 43.
(a) Distinguish between new issue market and secondary market.
Answer:

Basis For Comparison	New Issue Market	Secondary Market
Meaning	The market place for new shares is called primary market. (Initial Issues Market)	The place where formerly issued securities are traded is known as Secondary Market. (Resale Market)
Buying	Direct	Indirect
Financing	It supplies funds to budding enterprises and also to existing companies for expansion and diversification.	It does not provide funding to companies.
How can securities be sold?	Only once	Multiple times
Buying and Selling between	Company and Investors	Investors
Gained person	Company	Investors
Intermediary	Underwriters	Brokers
Price	Fixed price                               “	Fluctuates, depends on the demand and supply force.
Organizational difference	Not rooted to any specific spot or geographical location.      .	It has physical existence.

[OR]

(b) Explain the functions of Stock Exchange. (Any 5)
Answer:

• Ready and Continuous Market: Stock exchange helps the investors to sell his securities easily. And also he can convert his cash into securities.
• Correct Evaluation of Securities: The prices at which securities are bought and sold are recorded and informed to the public. These prices are called “market quotations”.
• Protection to Investors: All dealings in a stock exchange are in accordance with well-defined rules and regulations. Any malpractice will be severely punished.
• Proper Channelisation of Capital: People like to invest in the shares of companies which yield good profits. Also people invest in the companies which are giving good dividends.
• Facilities for Speculation: Speculation is an integral part of stock exchange operations. As a result of speculation, demand for and supply of securities are equalized.

Question 44.
(a) Explain the different methods of recruitment.
Answer:
Recruitment means selecting the right person for the right job. There are basically two ways by which an organisation can recruit its employees – Internal and External sources. External sources can further be classified into Direct and Indirect sources.

Internal Sources:
Transfer, Upgrading, Promotion, Demotion, Recommendation by existing Employees, Job rotation, Retired employees, Dependants, Previous applicants, Acquisitions and Mergers.

External Sources:

• Direct – Advertisements, Unsolicited applicants, Walk-ins, Campus Recruitment, Recruitment at Factory gate, Rival firms, e-Recruitment.
• Indirect – Employee referral, Govemment/Public Employment Exchanges, Employment Agencies, Employment Consultancies, Professional Associations, Deputation, Word of mouth, Labour Contractors, Job Portals, Outsourcing, Poaching.

[OR]

(b) State the advantages of warehousing.
Answer:

• Goods produced may be stored till the time of demand. Hence the goods are stored in warehouses.
• Also the goods are stored till the goods have good quality.
• Warehouses create time utility by storing the goods throughout the year and release them as and when they are needed.

Several types of warehouses are used for storing of goods.
They are as follows:

• Public warehouse
• Private warehouse
• Bonded warehouse

Question 45.
(a) Explain the duties of consumers.
Answer:
Apart from rights, there are certain duties imposed on the consumer. The following are the
duties of consumers:

• Buying Quality Products at Reasonable Price: It is the duty of a consumer to purchase a product after gaining a thorough knowledge of its price, quality and other terms and conditions.
• Ensure the Weights and Measurement before Purchase: The consumer should ensure that he/she is getting the product of exact weight and measure.
• Reading the Label Carefully: It is the duty of the consumer to read the label of the product thoroughly.
• Beware of False and Attractive Advertisements: It is the prime duty of the consumer about the genuineness of the advertisement, before purchasing the product.
• Ensuring the Receipt of Cash Bill: It is a legitimate duty of consumers to get the cash receipt and warranty card supplied along with the bill.

[OR]

(b) Discuss the role of macro environment of business.
Answer:
This is the general or overall environment in which the business operates. The success of a business is dependent on its ability to adapt to the macro environment.

Role of Macro-environment:

• The business is an integral part of the economic system prevalent in a nation.
• Business is a part of the society. Social environment refers to the sum total of factors of the society in which the business is located.
• The success of a business lies in its ability to adapt and sustain to political and legal changes. The legislative, executive and judiciary are the three political institutions which directs and influences a business.
• The natural, geographical and ecological factors have a bearing on the business.

Question 46.
(a) Distinguish between sale and agreement to sell.
Answer:

Basis for Comparison	Sale	Agreement to Sell
1. Ownership	The property (ownership or title) in the goods passes from the seller to the buyer immediately.	The property (ownership or title) in the goods has to pass at a future time or after the fulfilment of certain conditions.
2. Risk of Loss	Where the goods sold under the contract of sale are destroyed, the loss falls fully on the buyer as the ownership has already passed.	Where the goods under the agreement to sell are destroyed, the loss falls fully on the seller as the ownership is still vested with seller.
3. Consequences of violating the contract	Where the buyer fails to pay the price, the seller cannot seize the goods.	Where the buyer violates the contract, the seller can repossess the goods from the former.
4. Nature of contract	It is an executed contract.	It is an executory contract, i.e., contract yet to be performed.
5. Insolvency of the Buyer	In a sale, if a buyer becomes insolvent before he pays for the goods even though the goods sold are under the possession of the seller, the latter has to return them to the Official Receiver..	If the buyer becomes insolvent before the payment of the price, the seller can retain the goods if they are under his possession.

[OR]

(b) Explain the different kinds of endorsements.
Answer:
When the person signs on the back of the instrument to transfer his interest, it is known as endorsement. The endorsements are of various types:

• Blank or general endorsement : When the endorser puts his mere signature on the back of an instrument without mentioning the name of the person to whom the endorsement is made, it is called Blank Endorsement
• Endorsement in full or special endorsement : If the endorser, in addition to his signature, mentions the name of the person to whom it is endorsed, is known as endorsement in full or special endorsement.
• Conditional endorsement : When the endorser of a negotiable instrument makes his liability dependent upon the happening of an event which may or may not happen, it is called conditional endorsement.
• Restrictive endorsement : When an endorsement restricts or prohibits further negotiability of the instrument, it is called Restrictive Endorsement.
• Partial Endorsement : Where the endorsement seeks to transfer only a part of the amount payable under the instrument, the endorsement is called Partial Endorsement.

Question 47.
(a) How do you classify entrepreneurs?
Answer:
Entrepreneurs are now broadly classified into three groups namely risk bearer, organiser and innovator.
(i) Entrepreneur as a risk bearer: Entrepreneurs acts as an agent combining all factors of production to produce a product or service in order to sell at uncertain price in future.

(ii) Entrepreneur as an organiser: Entrepreneur is one who brings together various factors of production and creates an entity to produce product or service and supervise and coordinates several functions in the process.

(iii) Entrepreneur as an innovator: According to Joseph A. Schumpeter in the year 1934 used innovation as a criterion to define an individual as entrepreneui.
According to him, entrepreneur is one who-

• Introduces a brand new product in the market.
• Institutes new technology to produce a new product.
• Discovers new course of supply of raw materials.

[OR]

(b) Discuss the nature of functional entrepreneurs.
Answer:
Nature of functional entrepreneurs:

• Innovative Entrepreneur: He is a person who introduces new project. They observe the environment regarding information to the new venture.
• Imitative Entrepreneur: He refers to the person who simply imitates existing knowledge or technology already in advance countries. Redesigning of products suited to the local conditions.
• Fabian Entrepreneur: These are said to be conservatives and sceptical about any changes in their organisation. They are of risk-averse.
• Drone Entrepreneur: Drone entrepreneurs are those who are totally opposed to changes in the environment. They used to operate in the niche market.

Students can download 10th Social Science History Chapter 10 Social Transformation in Tamil Nadu Questions and Answers, Notes, Samacheer Kalvi 10th Social Science Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

Tamilnadu Samacheer Kalvi 10th Social Science Solutions History Chapter 10 Social Transformation in Tamil Nadu

Samacheer Kalvi 10th Social Science Social Transformation in Tamil Nadu Text Book Back Questions and Answers

I. Choose the correct answer

Question 1.
…………….. was the pioneer of social Reformers in India.
(a) C. W. Damotharanar
(b) Periyar
(c) Raja Rammohan Roy
(d) Maraimalai Adigal
Answer:
(c) Raja Rammohan Roy

Question 2.
…………… established a full-fledged printing press in 1709, at Tranquebar.
(a) Caldwell
(b) F.W.Ellis
(c) Ziegenbalg
(d) Meenakshisundaram
Answer:
(c) Ziegenbalg

Question 3.
…………….. was the official newspaper of the Self Respect Movement.
(a) Kudi Arasu
(b) Puratchi
(c) Viduthalai
(d) Paguththarivu
Answer:
(a) Kudi Arasu

Question 4.
Periyar wanted religion to be replaced by ………………
(a) Nationalism
(b) Iconoclasm
(c) Rationalism
(d) Spiritualism
Answer:
(c) Rationalism

Question 5.
…………….. founded Adi Dravida Mahajana Sabha in 1893.
(a) Rettaimalai Srinivasan
(b) B.R. Ambedkar
(c) Rajaji
(d) M.C. Rajah
Answer:
(a) Rettaimalai Srinivasan

Question 6.
India’s first organised trade union, the Madras Labour Union was formed in ………….
(a) 1918
(b) 1917
(c) 1916
(d) 1914
Answer:
(a) 1918

Question 7.
…………….. was established by the Justice Party Government for the selection of Government officials.
(a) Staff Selection Board
(b) Public Service Commission
(c) Provincial Staff Recruitment Board
(d) Staff Selection Commission
Answer:
(a) Staff Selection Board

Question 8.
……………. was the first elected Legislative Council Member from the depressed class in Madras Province.
(a) M. C. Rajah
(b) Rettaimalai Srinivasan
(c) T.M. Nair
(d) P. Varadarajulu
Answer:
(a) M. C. Rajah

II. Fill in the blanks

1. ……………… was the first non-European language that went into print.
2. The College of Fort St. George was founded by ………………
3. ……………… is considered the father of Tamil linguistic purism.
4. ……………… was the first to approve participation of women in the electoral politics.
5. The name Suriyanarayana Sastri changed in Tamil as ………………
6. ……………… gave prominence to Tamil music.
7. The first Woman Legislator in India was

Answers:

1. Tamil
2. F.W. Ellis
3. Maraimalai Adigal
4. Justice Party Government
5. Parithimar Kalaignar
6. Abraham Pandithar
7. Muthulakshmi Ammaiyar

III. Choose the correct statement

Question 1.
(i) Thirukkural was one of the earliest Tamil literary texts to be published in 1812.
(ii) Maraimalai Adigal collected and edited different palm leaf manuscripts of the Tamil grammars and literature.
(iii) Robert Caldwell established the close affinity between the Dravidian languages in contrast with Sanskrit and also established the antiquity of Tamil.
(iv) Thiru. V. Kalyanasundaram was an early pioneer in Trade union movement.
(a) (i) and (1%) are correct
(b) (i) and (iii) are correct
(c) (iv) is correct
(d) (ii) anA (iii) are correct
Answer:
(b) (i) and (iii) are correct

Question 2.
(i) Margret Cousin was one of the founders of Women’s India Association.
(ii) Periyar spent his entire life campaigning against superstitions through Thinkers or Rationalists Forums he had formed.
(iii) Singaravelar was a staunch supporter of the Hindu Mahasabha.
(iv) Periyar emphasised that the caste system in South India is linked with the arrival of Brahmins from the North.
(a) (iii) and (iv) are correct
(b) (ii), (iii) and (iv) are correct
(c) (i), (ii) and (iv) are correct
(d) (ii) and (iii) are correct
Answer:
(c) (i), (ii) and (iv) are correct

Question 3.
Assertion (A): The Justice Party continued to remain in Government from 192CE1937 in Madras Presidency.
Reason (R): The Congress Party boycotted the Madras Legislature during this period of Dyarchy.
(a) Both A and R are correct
(b) A is correct, but R is not the correct explanation
(c) Both A and R are wrong
(d) R is correct, but it has no relevance to A
Answer:
(b) A is correct, but R is not the correct explanation

Question 4.
Assertion (A): As World War I was in progress, the British Government was considering the introduction of representative institutions for Indians after the war.
Reason (R): In 1920, Dyarchy as a form of Government was introduced in the provinces.
(a) A is correct, but R is not the correct reason
(b) Both A and R are wrong
(c) Both A and R are right
(d) A is wrong and R has no relevance to A
Answer:
(c) Both A and R are right

IV. Match the following

Answer:
A. (iv)
B. (iii)
C. (i)
D. (ii)

V. Answer briefly

Question 1.
Write a note on Tamil Renaissance.
Answer:
C.W. Damotharanar collected and edited different palm leaf manuscripts of the Tamil grammars and literature. U.V. Swaminathar took efforts to publish the classical texts. These triggered an intellectual revolution and it was popularly known as Tamil Renaissance. Tamil language and culture played a significant role in their identity construction. The introduction of printing press, linguistic research on Dravidian languages, etc., underpinned the process of Tamil renaissance.

Tamil was the first non-European language that went into print. In the nineteenth century, Tamil scholars like C.W. Damotharanar, and U.V. Swaminathar spent their lifetime in the rediscovery of the Tamil classics. This provided the Tamil people with a revelation about their heritage. Therefore, the rediscovery of ancient classics and their publication is considered the foundation of Tamil renaissance.

Question 2.
Highlight the contribution of Caldwell for the cause of South Indian languages.
Answer:

1. In 1816, F. W. Ellis who founded the College of Fort St. George, formulated the theory that the south Indian languages belonged to a separate family which was unrelated to the Indo – Aryan family of languages.
2. Robert Caldwell (1814-1891) expanded this argument in a book titled. A comparative grammar of the Dravidian (or) South Indian family of languages in 1856.
3. He established the close affinity between the Dravidian languages in contrast with Sanskrit and also established the antiquity of Tamil.

Question 3.
List out the personalities who contributed to the revival of Tamil literature through their writings.
Answer:
C.W. Damotharanar, U.V. Swaminathar, F.W. Ellis, Robert Caldwell, Subramania Bharati, Thiru Vi. Kalyanasundaram, Singaraveiar, PanditViar lyotheethassar, Sundaram Pillar and Maraimalai Adigal.

Question 4.
Discuss the importance of Hindu Religious Endowment Act passed by the Justicite Ministry.
Answer:

1. The Justice Party further concentrated on reforms in religious institutions.
2. Tamil Nadu has a large number of temples and these commanded huge resources.
3. In general, the resources were monopolised and exploited by the ‘ dominant caste in the society and led to mismanagement of public resources.
4. The Justice Party introduced the Hindu Religious Endowment (HRE) Act in 1926 and enabled any individual irrespective of their caste affiliation to become a member of the temple committee and govern the resources of the religious institutions.

Question 5.
What do you know of the Cheranmahadevi Gurukulam incident?
Answer:
A Gurukulam was established in Cheranmahadevi by V.V.S. Iyer with the financial support of the Tamil Nadu Congress Committee. However, students were discriminated on the basis of caste. Brahmin and non-Brahmin students were made to dine separately. Periyar was disturbed to see the discrimination. He questioned the practice, and severely criticized it. Despite his objections, Congress continued to support the iniquitous practice in the Gurukulam. This disappointed Periyar.

Question 6.
Name the newspapers published by the South Indian Liberal Foundation.
Answer:
Dravidian in Tamil, Justice in English and Andra Prakasika in Telugu to propagate ideals of the Party.

Question 7.
Estimate Periyar as a feminist
Answer:
Periyar was a great feminist. He believed in gender equality and raised voice over the plight of women. He emphasized on women’s right to divorce and property. He objected the terms like “giving in marriage”. This, he said, treats woman as a thing. He wanted it to substitute by “valkaithunai,” (companion) a word for marriage taken from the Tirukkural. Periyar’s most important work on this subject is Why the Woman is Enslaved ? He believed that property rights for women would provide them a social status and protection. He welcomed equal rights for males and females in property, guardianship and adoption.

Question 8.
Explain the proceedings of All India Trade Union Congress Conference held in 1920.
Answer:

1. The first All India Trade Union Conference (AITUC) was held on 31st October 1920 in Bombay. The delegates discussed several resolutions.
2. These included a demand for protection from police interference in labour disputes, the maintenance of an unemployment register restriction on exporting food stuffs, compensation for injuries and health insurance.
3. In addition, the delegates demanded that Indian workers be given some representation in the Government just as empolyers had representatives on legislative councils.

VI. Answer the questions given under each caption

Question 1.
Periyar e.v.r

(a) When did Periyar founded the Dravidar Kazhagam?
Answer:
Periyar founded the Dravidar Kazhagam in the year 1944.

(b) What were the Newspapers and Journals run by Periyar?
Answer:
Kudi Arasu (Democracy) (1925) Revolt (1928) Puratchi Revolution (1933) Paguth tharivu (Rationalism) (1934) and Viduthalai (Liberation) (1935).

(c) Why was Periyar known as Vaikom hero?
Answer:

1. In the name of caste dharma the “lower caste” people were denied access to the temples and the streets surrounding the temple.
2. In Vaikom Catown in the then princely state of Travancore and in present day Kerala, people protest against this practice.
3. People hailed him as Vaikom Virar (Hero of Vaikom) because Periyar led the movement and was imprisoned.

(d) Which was the most important work of Periyar?
Answer:
Periyar’s most important work on this subject is why the women is enslaved?

Question 2.
Labour Movement in Tamil Nadu

(a) Highlight the factors that caused the birth of Trade Union Movement in Madras.
Answer:
The factors that caused the birth of Trade Union Movement in Madras are

• Retrenchment of workers at the end of the First World War.
• Nationalists’ support to the cause of labour.

(b) Identify the three prominent persons associated with the Madras Labour Union.
Answer:
Three prominent persons associated with the Madras Labour Union are B.P. Walia, M. Singaravelar and Thiru.Vi. Kalyanasundaram.

(c) Where was the first conference of All India Trade Union Congress held?
Answer:
The first All India Trade Union Conference was held in Bombay.

(d) Who organized the first ever celebration of May Day in Madras and which year?
Answer:
M. Singaravelar organised the first ever celebration of May Day in Madras in 1923.

Question 3.
Maraimalai adigal

(a) Name the Sangam texts for which Maraimalai Adigai wrote commentaries.
Answer:
Maraimalai Adigai wrote commentaries on the sangam texts Pattinappalai and Mullaipattu.

(b) Name the Journal where he worked as a young man.
Answer:
Siddhanta Deepika.

(c) Why did he oppose imposition of Hindi?
Answer:
He promoted the use of pure Tamil words, impact on Tamil culture especially in language and literature.

(d) Who were the key influences in Maraimalai Adigal’s life?
Answer:
Maraimalai Adaigal’s teachers such as P. Sundaranar and Somasundra Nayagar were key influences in his life.

VII. Answer in detail

Question 1.
Attempt an essay on foundation and development of Tamil Renaissance in the 19fh Century.
Answer:
(i) In Tamil Nadu, the proliferation of the printing press acted as a catalyst for the publication and spread of secular ancient Tamil literature.

(ii) In the nineteenth century, Tamil scholars like C.W. Damotharanar, and U.V. Swaminathar spent their lifetime in the rediscovery of the Tamil classics.

(iii) C.W. Damotharanar collected and edited different palm leaf manuscripts of the Tamil grammars and literature. U.V. Swaminathar took efforts to publish the classical texts. These triggered an intellectual revolution and it was popularly known as Tamil Renaissance.

(iv) The transformation not only revived Tamil language and literature but also Tamil culture. It challenged the prevailed caste hierarchy and influenced the rise of Dravidian consciousness and established Tamil as a language of the Dravidian people.

(v) Tamil renaissance questioned the cultural hegemony of Brahminism. These developments were reflected in art, literature, religion, etc.

Question 2.
Describe the background for the formation of the Justice Party and point put its contribution to the cause of social justice.
Answer:

1. As World War -1 was in progress the British Government was considering the introduction of representative institutions for Indians after the War.
2. Fearing that such political reforms would further strengthen the political power of Brahmins, educated Non – Brahmins decided to organise themselves politically.
3. On 20th, November 1916 around 30 prominent Non – Brahmin leaders including Dr. C. Natesanar Sir, Pitti Theyagarayar, T.M. Nair and Alamelu Mangai Thayarammal came together to form the South Indian Liberation Federation (SILF).

Programme and Activities:

1. The Justice Party is the fountain head of the Non – Brahmin Movement in the country.
2. The Justicite removed the legal hindrances restricting inter – caste marriages and broke the barriers that prevented Depressed Classes from the use of public wells and tanks.
3. Hostels were established for the students belonging to this social group in 1923.
4. The Justice Party Government was the first to approve participation of women in the electoral politics in (1921)
5. The Justice Party worked towards legislating provisions for communal representation reservations for various communities.
6. The Justice Party rule established the Staff Selection Board in 1924 for the selection of Government officials and encouraged all the communities to share the administrative powers.
7. In 1929, the Government of British India adopted the pattern and established the Public Service Commission.
8. The Justice Party introduced the Hindu Religious Endowment (HRE) Act in 1926 and enabled any individual, irrespective of their caste affiliation, to become a member of the temple committee and govern the resources of the religious institutions.

Question 3.
Estimate Periyar E.V.R’s decisive contribution to the social transformation of Tamil Nadu?
Answer:
Periyar was a great social reformer. His contribution to the social transformation of Tamil Nadu is really praise worthy.
(i) He launched ‘Temple entry’ movement to provide the lower caste people easy access to the temples.

(ii) He also started the Self-Respect movement in 1925, with the determination that there ought to be ‘no God; no religion; no Gandhi; no Congress; and no Brahmins’.

(iii) Periyar was critical of patriarchy. He condemned child marriage and the Devadasi system. Right from 1929, when the Self-Respect conference began to voice its concern over the plight of women, Periyar had been emphasising on women’s right to divorce and property.

(iv) He advocated atheism as a mode of critique to deconstruct the established practices of faith, culture and custom. Periyar wanted religion to be replaced by rationalism.

(v) He welcomed equal rights for males and females in property, guardianship and adoption. He was strong champion of birth control and contraception.

VIII. Students Activity

Question 1.
Students can be taught to distinguish between Labour Movement and Trade Union Movement. Project work on the activities of local trade union organisations may be done by students.
Answer:
Distinguish between Labour Movement and Trade Movement.

Labour Movement:

1. It is a political movement campaigning to improve the rights and conditions of the working people.
2. If originated in U.S.A focussing on rights, interests and protection of employees.
3. Labour movement generally work for better wages, reasonable working hours and safer working conditions.

Trade union Movement:

1. It is an association of workers forming a legal unit to improve their status by united action.
2. It originated in Great Britain focussing to protect and promote the welfare of the employees.
3. Trade Union Movement regulate employer – employee relationship and generally work for better wages, reasonable working hours and safer working conditions.

Activities of a local trade union: Students should visit with few of their classmates (with prior permission from the subject teacher and school authorities and parents) to visit a nearby industry where trade unions are organised by the workers.

They have to meet the trade, union leader and gather information on the activities performed by them in the factory. The collected information should be written down neatly and submit to the subject teacher.

Eg: In general, the following are the few activities performed by the trade union.

1. Negotiate wages.
2. Regulate relationship between workers (employees) and the employers.
3. Raise demand for new uniform, or safer working condition, pure drinking water, sanitary facilities etc.,
4. Protect the workers against discrimination.
5. Protect the workers from exploitation.

Question 2.
Students can compile the activities of the local writers’ associations or women’s collectives.
Answer:
Local writers Association/women collectives: Students should find people who are writers and they write scripts for audio formats, digital media (or) T.V or screenwriters for films. Later, students can collect information about their.

1. Name of their Association.
2. Location.
3. Job site.
4. Nature of work.
5. Year of joining the Association
6. Membership fee
7. Total no. of members
8. Usefulness being the member

and submit in this format to the subject teacher. If students can find women organised themselves as a group, in the above-mentioned format can be used for that also. Eg: Women collectives (self-help group)

They work for their betterment together as a group (Sua Udavi Kuzhu).

Samacheer Kalvi 10th Social Science Social Transformation in Tamil Nadu Additional Important Questions and Answers

I. Choose the correct answer

Question 1.
………………. is also identified as the Indian renaissance.
(a) Historical development
(b) Political development
(c) Economic development
(d) None
Answer:
(a) Historical development

Question 2
Periyar transformed the justice Party into ………….
(a) Akali Dal
(b) Dravidar kazhagam
(c) Swarajya
Answer:
(b) Dravidar kazhagam

Question 3.
The basic inspiration of renaissance is:
(a) Knowledge
(b) Humanism
(c) Painting
(d) Transition
Answer:
(b) Humanism

Question 4.
Vaikom is a place in ……………
(a) Tamil Nadu
(b) Andhra Pradesh
(c) Kerala
Answer:
(c) Kerala

Question 5.
The introduction of ………………. on Dravidian languages are underpinned the Process of tamil renaissance
(a) Printing press
(b) linguistic research
(c) both (a) and (b)
(d) knowledge
Answer:
(c) both (a) and (b)

Question 6.
The Justice Party was established in 1916 by ……………
(a) Periyar
(b) Anna
(c) C. Natesanar, Pitti Theyagarayar, T.M. Nair and Alamelu Mangai Thayarammal
Answer:
(c) C. Natesanar, Pitti Theyagarayar, T.M. Nair and Alamelu Mangai Thayarammal

Question 7.
In which year Thirukkural, Tamil literary text to be published?
(a) 1810
(b) 1805
(c) 1808
(d) 1812
Answer:
(d) 1812

Question 8.
Self Respect Movement was started in the year …………….
(a) 1927
(b) 1925
(c) 1930
Answer:
(b) 1925

Question 9.
Who was collected and edited different palm – leaf manuscripts of the Tamil grammerand literature?
(a) U.V. Swaminathar
(b) C.W. Damotharanar
(c) Meenakshi Sundaranar
(d) P. Sundaranar
Answer:
(b) C.W. Damotharanar

Question 10.
Devadasi system was abolished by …………..
(a) Dr. Muthulakshmi Reddy
(b) Ramamirdhan
(c) Dr. S. Dharmambal
Answer:
(a) Dr. Muthulakshmi Reddy

Question 11.
………………. was popularly known as Vallalar.
(a) Ramalinga Adigal
(b) Parithimar Kalaignar
(c) Thiru.Vi. Ka
(d) Maraimalai Adigal
Answer:
(a) Ramalinga Adigal

Question 12.
Whose name is associated with the ‘Self-Respect’ movement?
(a) Muthulakshmi Reddy
(b) Rajaji
(c) Rettimalai Srinivasan
(d) Periyar
Answer:
(d) Periyar

Question 13.
Who was the first to argue that Tamil is a classical languages?
(a) Parithimar Kalaignar
(b) Maraimalai Adigal
(с) E.V. Ramasamy
(d) M. Singaravelar
Answer:
(a) Parithimar Kalaignar

Question 14.
Whose efforts led to the abolition of the devadasi system?
(a) Muthulakshmi Reddy
(b) Muvalur Ramamirtham
(c) M.C. Rajah
(d) Periyar
Answer:
(a) Muthulakshmi Reddy

Question 15.
Which organisation focused on educating and supporting Non – Brahmin graduates?
(a) Madras Dravidian Association
(b) Tani Tamil Iyakkam
(c) Tamil Isai Iyakkam
(d) None
Answer:
(a) Madras Dravidian Association

Question 16.
Who was the founder of Tani Tamil Iyakkam? (Pure Tamil Movement).
(a) M. Singaravelar
(b) Parithimar Kalaignar
(c) Ramalinga Adigal
(d) Maraimalai Adigal
Answer:
(d) Maraimalai Adigal

Question 17.
In which year Non – Brahmin Manifesto was released?
(a) 1905
(b) 1910
(c) 1912
(d) 1916
Answer:
(d) 1916

Question 18.
In which year the Congress contested the electron for the first time?
(a) 1930
(b) 1933
(c) 1935
(d) 1937
Answer:
(d) 1937

Question 19.
In which year Justice Party Government was the firstto approval participation of women in the electrol politics?
(a) 1910
(b) 1915
(c) 1919
(d) 1921
Answer:
(d) 1921

Question 20.
Which Party introduced the Hindu Religious Endowment? (HRE)
(a) The Justice Party
(b) The Congress Party
(c) both (a) and (b)
(d) none
Answer:
(a) The Justice Party

Question 21.
Who was the founder of the Self – Respect Movement?
(a) E.V. Ramasamy
(b) Rajaji
(c) Rettaimalai
(d) none
Answer:
(a) E.V. Ramasamy

Question 22.
In which year Rettaimalai Srinivasan was born?
(a) 1849
(b) 1852
(c) 1855
(d) 1859
Answer:
(d) 1859

Question 23.
Who was one of the prominent leaders from the “depressed class”?
(a) B.R. Ambedkar
(b) M.C. Rajah
(c) Rajaji
(d) none
Answer:
(b) M.C. Rajah

Question 24.
Who was a pioneer in the labour movement activities?
(a) M. Singaravelar
(b) M.C. Rajah .
(c) B.R. Ambedkar
(d) Rajaji
Answer:
(a) M. Singaravelar

Question 25.
Who was in the forefront of the campaign pressing for legislation to abolish Devadasi system?
(a) Nagammai
(b) Dr. Muthulakshmi
(c) Rukmani
(d) Neelambikai
Answer:
(b) Dr. Muthulakshmi

II. Fill in the blanks

1. ………………. traditions were treated as primitive.
2. ………………. was portrayed as conservative.
3. ………………. brought changes in the socio – cultural life of the Indian sub – continent.
4. Manonmaniam written by ……………….
5. Tamil renaissance questioned the cultural hegemony of ……………….
6. ………………. an early pioneer in Buddhist revival promoted communism and socialism.
7. ………………. worked in a Journal Siddhanta Deepika.
8. ………………. held high in the radical philosophy.
9. ………………. complied a dictionary that provide pure Tamil equivalent to Sanskirt.
10. The Madras Non – Brahmins Association was founded in ……………….
11. ………………. founded the Madras United League.
12. ………………. won the election and formed the first ever Indian Cabinet in Madras.
13. ………………. later renamed as Madras Dravidian Association to support Dravidian uplift.
14. ………………. became the chief minister of the Madras Presidency during (1920-26).
15. ………………. is the fountain head of the Non – Brahmin Movement in the country.
16. In 1929, the Government of ………………. adopted the pattern and established the public service commission.
17. ………………. proposed a resolution regarding the rights of “Untouchables” to temple entry.
18. ………………. demand for a separate electorates for scheduled castes.
19. ………………. The Chief Minister of Madras State (1952 – 54) introduced to vocational training.
20. ………………. wanted religion to be replaced by rationalism.
21. ………………. who had worked for the the progress of the deprived castes.
22. The first All India Trade Union (AITUC) was held in ……………….
23. ………………. demanded abolition of untouchability.
24. ………………. was a pioneer in the Labour Movement Activities.
25. The first Tamil Isai conference was held in ……………….
26. ………………. was one of the important objectives of the Self – Respect Movement.
27. ………………. formed the All India Women’s Conference (AlWC).
28. The Madras ………………. was enacted by the Government.
29. ………………. founded the Tanjore Sangitha Vidhya Mahajana Sangam.
30.  ………………. published a Tamil Newspaper Thozhilalan (Worker).

Answers:

1. Indigenous
2. Indian society
3. The rise of Humanism
4. P. Sundaranar
5. Brahminism
6. M. Singaravelar
7. Maraimalai Adigal
8. E.V. Ramasamy
9. Neelambikai
10. 1909
11. C. Natesanar
12. The Justice Party
13. Madras United League
14. A. Subbarayalu
15. The Justice Party
16. British India
17. Periyar
18. Dr. B.R. Ambedkar
19. Rajaji
20. Periyar
21. Rettaimalai Srinivasan
22. Bombay
23. M.C. Rajah
24. M. Singaravelar
25. 1943
26. Women’s Liberation
27. Women’s India Association (WIA)
28. Devadasis Act
29. Abraham Pandithar
30. M. Singaravelar

III. Choose the correct statement

Question 1.
(i) C.W. Damotharanar collected and edited different palm-leaf manuscripts of the Tamil grammar.
(ii) Ramalinga Adigal gave prominence to Tamil music.
(iii) Maraimalai Adigal promoted the use of pure Tamil words and removal of the Sanskirt influence from the Tamil language.
(iv) Muvalur Ramamirtham to became the first women legislator in India in 1926.
(a) (i) and (ii) are correct
(b) (i) and (iii) are correct
(c) (iv) is correct
(d) (ii) and (iii) are correct
Answer:
(b) (i) and (iii) are correct

Question 2.
(i) The Justice Party Rule established the Staff Selection Board in 1924 for the selection of Government officials.
(ii) Periyar had a close relationship with Singaravelar who is considered the first communist of South India.
(iii) The anti – Hindi agitation (1932 -1936) had a big impact on Tamil Nadu’s politics.
(iv) Rettaimalai Srinivasan criticised it as Kula Kalvi Thittam and opposed it tooth and nail.
(a) (i) and (ii) are correct
(b) (i) and (iv) are correct
(c) (iii) is correct
(d) (ii) and (iv) are correct
Answer:
(a) (i) and (ii) are correct

Question 3.
(i) Periyar was keen on the introduction of reservation in representative bodies such as the legislative council for Non – Brahmins.
(ii) All India Women’s Conference (AIWC) in 1937 to address the problem of Non – Brahmins.
(iii) The First World War (1912 -1920) provided stimulus to industrial growth ih India.
(iv) Women’s Liberation was one of the important objectives of Self – Respect Movement.
(a) (i) and (ii) are correct
(b) (i) and (iii) are correct
(c) (iv) is correct
(d) (i) and (iv) are correct
Answer:
(d) (i) and (iv) are correct

Question 4.
Assertion (A): Rettaimalai Srinivasan who had experienced the horrors of untouchability worked for the progress of the deprive castes.
Reason (R): He served as president of the scheduled castes federations and the Madras Provincial Depressed Classes.
(a) Both A and R are correct.
(b) A is correct but R is not the correct explanation of A.
(c) Both A and R wrong.
(d) R is correct but it has no relevance to A.
Answer:
(a) Both A and R are correct.

Question 5.
Assertion (A): Periyar E.V. Ramasamy was the founder of the Self – Respect movement.
Reason (R): The movement was concerned with the marginalised sections of the society and criticised Brahminism and it advocated a casteless society.
(a) Both A and R are wrong.
(b) A is correct and R is correct explanation of A.
(c) A is correct and R is wrong.
(d) Both A and R are correct but R is not the correct explanation of A.
Answer:
(b) A is correct and R is correct explanation of A.

IV. Match the following

Question 1.
Match the Column I with Column II.

Answer:
A. (iii)
B. (iv)
C. (ii)
D. (v)
E. (i)

Question 2.
Match the Column I with Column II.

Answer:
A. (iv)
B. (v)
C. (ii)
D. (iii)
E. (i)

Question 3.
Match the Column I with Column II.

Answer:
A. (iii)
B. (v)
C. (i)
D. (ii)
E. (iv)

Question 4.
Match the Column I with Column II.

Answer:
A. (iv)
B. (iii)
C. (v)
D. (i)
E. (ii)

Question 5.
Match the Column I with Column II.

Answer:
A. (iii)
B. (iv)
C. (v)
D. (i)
E. (ii)

Question 6.
Match the Column I with Column II.

Answer:
A. (v)
B. (iii)
C. (iv)
D. (i)
E. (ii)

Question 7.
Match the Column I with Column II.

Answer:
A. (iv)
B. (v)
C. (ii)
D. (i)
E. (iii)

Question 8.
Match the Column I with Column II.

Answer:
A. (iv)
B. (v)
C. (a)
D. (ii)
E. (iii)

V. Answer briefly

Question 1.
What are the aims of Self Respect Movement?
Answer:

1. The Self Respect Movement condemned and fought against Brahmin domination over other castes, society, politics and religion.
2. It fought to abolish traditionalism and superstitions.
3. It advocated women education, widow remarriage, inter-caste marriages and opposed child marriage.

Question 2.
Explain about the basic inspiration of renaissance.
Answer:

1. The basic inspiration of renaissance is humanism and questioning the fundamentalist religious practices that denied humans their dignity.
2. This ideology of humanism stimulated creative energy in all spheres of social life and knowledge such as language, literature, philosophy, music, painting, architecture etc.

Question 3.
What were the causes for the failure of the Justice Party?
Answer:

1. The Justice Party came to power when the world was in economic depression.
2. The Nationalist Movement was popular and heading for freedom.
3. Caste and wealth played vital role. Hence the party lost its hold.
4. The rise of congress under the leadership of Ghandhi became a formidable challenge to Jus¬tice Party.

Question 4.
List out a few manuscripts of the Tamil grammar edited by C.W. Damotharanar and U.V. Swaminathar.
Answer:

1. C.W. Domotharanar collected and edited different palm – leaf manuscripts of the Tamil grammar and literature.
2. His edition included such texts as Tholkappiyam, Viracholiyam, Iraiyanar Akapporul, Illakkana Villakkam, Kaliththokai, and Culamani.
3. U.V. Swaminathar took efforts to publish the classical texts such as Civakachinthamani, Paththupattu, Chilapathikaram, Purananuru, Purapporul – Venpa – Malai, Manimekalai, Ainkurunuru, and Pathitrupathu.

Question 5.
What was the different official positions hold by Periyar?
Answer:
Periyar held different official positions of Erode that included the chairmanship of Municipal Council, President of the Tamil Nadu Congress and President of the Justice Party.

Question 6.
What was the impact of Tamil language movement in the 20th century?
Answer:
In the 20th century Tamil language movement such as Tani Tamil Iyakkam and Tamil Isai Iyakkam made a significant cultural impact in creating a pure Tamil free from the influence of Sanskrit.

Question 7.
Discuss the work done by the Justice Party towards legislating provisions for communal representation?
Answer:
The Justice Party rule established the Staff Selection Board in 1924 for the selection of government officials and encouraged ail the communities to share the administrative powers. This ensured equitable distribution in appointments among various castes and communities as a part of achieving social justice.

Question 8.
Whom was Women’s India Association (WIA) started and what was its work?
Answer:

1. Women’s India Association was started in 1917 by Annie Besant, Dorothy JinaraJadasa and Margaret cousins at Adyar Madras.
2. The Association published pamphlets and bulletins in different languages to detail the problems of personal hygiene, marriage laws, voting rights, child care and women’s role in the public.

Question 9.
Who initiated the Self-Respect movement? What was it about?
Answer:
The Self-Respect movement was initiated by Periyar E.V. Ramaswamy. The movement was concerned with the marginalised sections of the society and criticised Brahminism and the cultural hegemony of the Brahmins. It advocated a casteless society devoid of rituals and difference based on birth. The movement declared rationality and self-respect as the birthright of all human beings and held these as more important than self-rule.

Question 10.
Who worked hard to abolish the Devadasi system?
Answer:
Dr. Muthulakshmi ammaiyar, was in the forefront of the campaign pressing for a legislation to abolish the devadasis system.

The Madras Devasasis (prevention of Dedication) Act 1947 was enacted by the Government.

Question 11.
What was the devadasi system? Why was it abolished?
Answer:
The devadasi system was a custom of dedicating young girls to the Hindu temples as a servant of God. Though intended as a service to God, it soon got corrupted leading to extensive immorality and abuse of the women.

Muthulakshmi Reddi started a campaign pressing for a legislation to abolish this system. Finally, the Madras Devadasis (Prevention of Dedication) was enacted by the government in 1947.

Question 12.
What were the titles given to Rettaimalai Srinivasan?
Answer:
Rettaimalai Srinivasan was honoured with such titles as Rao Sahib (1926), Rao Bahadur (1930) and Divan Bahadur (1936) for his selfless social services.

VI. Answer the question given under each caption

Question 1.
Rise Of the Dravidian Movement

(a) In what situation the Dravidian movement emerged?
Answer:
The Dravidian movement emerged as a defence of the Non – Brahmins against the Brahmin dominance.

(b) When was Madras Non – Brahmin Association formed?
Answer:
In 1909.

(c) Who was founded the Madras United League?
Answer:
C. Natesanar, a medical doctor founded the Madras United League.

(d) What is the main aim of the organisation?
Answer:
The organisation focused on educating and supporting Non – Brahmin graduates and conducting regular meetings to share their grievances.

Question 2.
Self Respect Movement:

(a) Who started the Self Respect Movement?
Answer:
E.V. Ramaswamy Periyar started the self respect movement.

(b) Why did he start?
Answer:
He started it in order to spread and execute his ideas and policies.

(c) When was it started?
Answer:
It was started in 1925.

(d) Name the laws passed by the Government due to the constant struggle of Self Respect Movement.
Answer:
Widow Remarriage Act, Women’s Right to property Act and abolition of Devadasi Act.

Question 3.
M.G. rajah

(a) Who was popularly known as M.C. Rajah?
Answer:
Mylar Chinnathambi Raja, popularly known as M.C. Rajah.

(b) What was his demand?
Answer:
He demanded abolition of untouchability and organised a number of political meetings for the “Untouchable castes” to have access to public wells and pathways to burial grounds.

(c) In which year All India Depressed Classes Association was formed?
Answer:
In 1928.

(d) What was the terms he advocated?
Answer:
He advocated the use of such as terms Adi – Dravida and Adi – Andhra.

VII. Answer in detail

Question 1.
Explain briefly about the self- respect movement.
Answer:

1. The Self- Respect Movement introduced a programme of Non – Brahmin uplift in Tamil Nadu.
2. The movement was concerned with the marginalised sections the society and Criticised Brahminism and the cultural hegemony of the Brahmin.
3. It advocated a casteless society devoid of rituals and diffemeces based on birth.
4. The movement declared rationality and Self – Respect as the birth right of all human beings and held these as more important than self – rule.
5. The movement demanded women’s emancipations, deplored superstition and emphasised rationality.
6. The movement also advocated self – respect marriage.
7. The Self – Respect Movement championed not only the cause of the Non – Brahmin Hindus, but also that of the Muslims.
8. The Self Respect Movement extrolled the lofty principles of Islam such as equity and brotherhood.
9. Muslim elite considered the Tamil Muslims as Dravidian.
10. He wanted the Dravidian Muslim to follow Mustapha Kemal Pasha of Turkey and Amanullah of Afghanistan who initiated reforms in Islamic society.

Question 2.
Give an account of Labour Movements in Tamil Nadu.
Answer:

1. The first World War (1914 – 18) provided stimulus to industrial growth India.
2. These industries catering to war time needs, had employed a huge number of workers.
3. At the end of the War there were retrenchments across the industries as the War time requirements receded.
4. Combined with high prices, this gave a momentum to the labour movement.
5. The nationalist realising the value of organised labour power began to supported the cause of labour,
6. B.P. Wadia, M. Singaravelar, ThiruVi. Ka and others initiated the formation of labour unions in the Madras presidency.
7. In 1918 India’s first organised trade union the Madras Labour Union, was formed.
8. The first All India Trade Union Conference (AITUC) was held on 31st October 1920 in Bombay.
9. These included a demand for protection from police interference in labour disputes, the maintenance of an unemployment register restriction on exporting food stuffs, compensation for injuries and health Insurance.
10. In addition, the delegates demanded that Indian workers be given some representation in the Government, just as employers, had representatives on legislative councils.
11. M. Singaravelar (1860 – 1946) was a pioneer in the Labour Movement activities in the Madras Presidency.
12. He organised the first over celebration of May Day in 1923.
13. He published a Tamil newspaper Thozhilalan (workers) to address the problem of the working class.

VIII. Draw a time line for the following

Question 1.
Write any five important events between 1905 -1927.
Answer:
Given period: 1905 – 1927

Question 2.
Write any five important events between 1920 -1930.
Answer:
Given period: 1920 – 1930

Question 3.
Write any five important events between 1930 -1947.
Answer:
Given period: 1930 – 1947

Question 4.
Write any five important events between 1931 -1945.
Answer:
Given period: 1931 – 1945

Question 5.
Write any five important events between 1937 -1947.
Answer:
Given period 1937 – 1947

Question 6.
Write any five important events between 1906 -1925.
Answer:
Given period: 1906 – 1925

Students can download 10th Social Science History Chapter 6 Early Revolts against British Rule in Tamil Nadu Questions and Answers, Notes, Samacheer Kalvi 10th Social Science Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams.

Tamilnadu Samacheer Kalvi 10th Social Science Solutions History Chapter 6 Early Revolts against British Rule in Tamil Nadu

Samacheer Kalvi 10th Social Science Early Revolts against British Rule in Tamil Nadu Text Book Back Questions and Answers

I. Choose the correct answer

Question 1.
Who was the first Palayakkarars to resist the East India Company’s policy of territorial aggrandisement?
(a) Marudhu brothers
(b) Puli Thevar
(c) Velunachiyar
(d) Veerapandya Kattabomman
Answer:
(b) Puli Thevar

Question 2.
Who had borrowed money from the East India Company to meet the expenses he had incurred during the Carnatic wars ?
(a) Velunachiyar
(b) Puli Thevar
(c) Nawab of Arcot
(d) Raja of Travancore
Answer:
(c) Nawab of Arcot

Question 3.
Who had established close relationship with the three agents of Chanda Sahib?
(a) Velunachiyar
(b) Kattabomman
(c) Puli Thevar
(d) Oomai thurai
Answer:
(c) Puli Thevar

Question 4.
Where was Sivasubramanianar executed?
(a) Kayathar
(b) Nagalapuram
(c) Virupachi
(d) Panchalamkurichi
Answer:
(b) Nagalapuram

Question 5.
Who issued the Tiruchirappalli proclamation of Independence?
(a) Marudhu brothers
(b) Puli Thevar
(c) Veerapandya Kattabomman
(d) Gopala Nayak
Answer:
(a) Marudhu brothers

Question 6.
When did the Vellore Revolt breakout?
(a) 24 May 1805
(b) 10 July 1805
(c) 10 July 1806
(d) 10 September 1806
Answer:
(c) 10 July 1806

Question 7.
Who was the Commander-in-Chief responsible for the new military regulations in Vellore Fort?
(a) Col. Fancourt
(b) Major Armstrong
(c) Sir John Cradock
(d) Colonel Agnew
Answer:
(c) Sir John Cradock

Question 8.
Where were the sons of Tipu Sultan sent after the Vellore Revolt?
(a) Calcutta
(b) Mumbai
(c) Delhi
(d) Mysore
Answer:
(a) Calcutta

II. Fill in the blanks

1. The Palayakkarars system was put in place in Tamil Nadu by …………….
2. Except the Palayakkarars of ……………. all other western Palayakkarars supported Puli Thevar.
3. Velunachiyar and her daughter were under the protection of ……………. for eight years.
4. Bennerman deputed ……………. to convey his message, asking Kattabomman to surrender.
5. Kattabomman was hanged to death at …………….
6. The Rebellion of Marudhu Brothers was categorized in the British records as the …………….
7. ……………. was declared the new Sultan by the rebels in Vellore Fort.
8. ……………. suppressed the revolt in Vellore Fort.

Answers:

1. Viswanatha Nayaka of Madurai
2. Sivagiri
3. Gopala Nayakar
4. Ramalinganar
5. Kayathar
6. Second Palayakarar war
7. Fateh Hyder (the eldest son of Tipusultan)
8. Colonel. Gillespie

III. Choose the correct statement

Question 1.
(i) The Palayakkarars system was in practice in the Kakatiya Kingdom.
(ii) Puli Thevar recaptured Nerkattumseval in 1764 after the death of Khan Sahib.
(iii) Yusuf Khan who was negotiating with the Palayakkarars, without informing the Company administration was charged with treachery and hanged in 1764.
(iv) Ondiveeran led one of the army units of Kattabomman.
(a) (i), (ii) and (iv) are correct
(b) (i), (ii) and (iii) are correct
(c) (iii) and (iv) are correct
(d) (i) and (iv) are correct
Answer:
(b) (i), (ii) and (iii) are correct

Question 2.
(i) UnderColonel Campbell, the English Army went along with Mahfuzkhan’s army.
(ii) After Muthu Vadugar’s death in Kalaiyar Kovil battle, Marudhu Brothers assisted Velunachiyar in restoring the throne to her.
(iii) Gopala Nayak spearheaded the famous Dindigul League.
(iv) In May 1799 Cornwallis ordered the advance of Company armies to Tirunelveli.
(a) (i) and (ii) are correct
(b) (ii) and (iii) are correct
(c) (ii), (iii) and (iv) are correct
(d) (i) and (iv) are correct
Answer:
(b) (ii) and (iii) are correct

Question 3.
Assertion (A): Puli Thevar tried to get the support of Hyder Ali and the French.
Reason (R): Hyder Ali could not help Puli Thevar as he was already in a serious conflict with the Marathas.
(a) Both (A) and (R) are correct, but (R) is not the correct explanation of (A)
(b) Both (A) and (R) are wrong
(c) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(d) (A) is wrong and (R) is correct
Answer:
(c) Both (A) and (R) are correct and (R) is the correct explanation of (A)

Question 4.
Assertion (A): Apart from the new military Regulations the most objectionable was the addition of a leather cockade in the turban.
Reason (R): The leather cockade was made of animal skin.
(a) (A) is wrong and (R) is correct
(b) Both (A) and (R) are correct and (R) is the correct explanation of (A)
(c) Both (A) and (R) are wrong
(d) Both (A) and (R) are correct, but (R) is not the correct explanation of (A)
Answer:
(b) Both (A) and (R) are correct and (R) is the correct explanation of (A)

IV. Match the following

Answer:
A. (v)
B. (iii)
C. (ii)
D. (i)
E. (iv)

V. Answer the questions briefly

Question 1.
What were the duties of the Palayakkarars?
Answer:
The Palayakkarars carried on the following duties:

1. They collected revenue, administered the territory control, settled disputes and maintained law and order.
2. On many occasions the Palayakkarars helped the Nayak rulers to restore the kingdom to them.

Question 2.
Identify the Palayams based on the division of east and west.
Answer:
The two prominent blocs were Eastern and Western Palayams:

Eastern Palayams:

1. Sattur
2. Nagalapuram
3. Ettayapuram
4. Panchalamkurichi.

Western Palayams:

1. Uthumalai
2. Thallawankottai
3. Naduvakurichi
4. Singampatti
5. Seithur.

Question 3.
Why was Heron dismissed from service?
Answer:
Colonel Heron was urged to deal with Puli Thevar as he continued to defy the authority of the company. Puli Thevar wielded much influence over the western Palayakkarars. Heron had to abandon the plan for want of cannon and of supplies and pay to soldiers. He retired to Madurai. He was then recalled and dismissed from sendee.

Question 4.
What was the significance of the Battle of Kalakadu?
Answer:

1. With the support of the East India company Arcot Nawab Mohamed Ali wanted to bring Madurai and Tirunelveli regions which were under the command of Nawab Chandra Sahib’s agents.
2. These agents got the support of Tamil Palayakkarars and had close relationship with Puli Thevar.
3. An army was sent under the head of Mahfiizkhan to capture Tirunelveli.
4. Before he station his troops near Kalakadu 2000 soldiers from Travancore joined the forces of Puli Thevar.
5. In the Battle of Kalakadu Mahfiizkhan troops were routed.
6. The organized resistance of the Palayakkarars under Puli Thevar gave an opportunity to the English to interfere directly in the affairs of Tirunelveli.

Question 5.
What was the bone of contention between the Company and Kattabomman?
Answer:
The company appointed its collectors to collect taxes from all the palayams. The collectors humiliated the Palayakkarars and adopted force to collect the taxes. This was the bone of contention between the English and Kattabomman.

Question 6.
Highlight the essence of the Tiruchirappalli Proclamation of 1801.
Answer:

1. The proclamation of 1801 was an early call to the Indians to unite against the British.
2. Many Palayakkars rebelled together, especially Chinna Maruthu collected nearly 20,000 men to challenge British.
3. But the Rajas of Pudukkottai, Ettayapuram and Thanjavur supported British.
4. So, in May 1801, English attacked the rebels in Thanjavur and Trichy rebels failed.
5. Though the Palayakkarars fell to the English, their exploits and sacrifices inspired later generation.
6. The rebellion of Marudhu brothers is a land mark event in the history of Tamil Nadu.
7. It is also known as “South Indian Rebellion”.

Question 7.
Point out the importance of the Treaty of 1801.
Answer:
Under the terms of the Carnatic Treaty of 31 July 1801, the British assumed direct control over Tamilagam and the Palayakkarar system came to an end with the demolition of all forts and disbandment of their army.

VI. Answer the questions given under each caption

Question 1.
Velunachiyar

(a) Who was the military chief of Velunachiyar?
Answer:
The military chief of Velunachiyar was ‘Thandavarayanar’.

(b) What were the martial arts in which she was trained?
Answer:
Velunachiyar had training in martial arts like valari, stick fighting and to wield weapons.

(c) Whom did she marry?
Answer:
She married Muthu Vadugar the Raja of Sivagangai.

(d) What was the name of her daughter?
Answer:
Her daughter name was Vellachinachiyar.

Question 2.
Dheeran Chinnamalai
(а) When was Dheeran Chinnamalai born?
Answer:
Dheeran Chinnamalai was born in 1756 in the Mandradiar royal family of Palayakottai.

(b) How did he earn the title “Chinnamalai”?
Answer:
Once when Tipu’s diwan Mohammed Ali was returning to Mysore with the tax money, Theerthagiri blocked his way and took back all the tax money. He let Mohammed Ali go by instructing him to tell his Sultan that ‘Chinnamalai; who is between Sivamalai and Chinnamalai, was the one who took away taxes. Thus, he gained the name ‘Dheeran Chennamalai’.

(c) Name the Diwan of Tipu Sultan.
Answer:
Mohammed Ali

(d) Why and where was he hanged to death?
Answer;
He was hanged at the top of the Sankagiri Fort on 31 July 1805 because he refused to accept the rule of the British.

VII. Answer in detail

Question 1.
Attempt an essay of the heroic fight Veerapandya Kattabomman conducted against the East India Company.
Answer:
Several events led to the conflicts between Veerapandiya Kattabomman and the East India Company.
Event 1:

1. Under the provisions of a treaty signed in 1781 with Mysore Sultan the East India Company gained the right to collect taxes from Panchalamkurichi where Veerapandiya Kattabommman was the ruler.
2. The company appointed its collectors to collect taxes from all the Palayams.
3. The collectors adopted force and humiliated the Palayakaras to collect the taxes. This was the bone of contention between the English and Kattabomman.

Event 2: Collector Jackson against the wish of the Madras Government wanted to send an army to collect the revenue dues from Kattabomman.

1. The arrogant English collector ordered Kattabomman to meet him in. Ramanathapuram. But Kattabomman’s attempts became futile as Jackson refused to meet him.
2. At last Kattabomman was made to stand for three hours before the haughty collector in Ramanathapuram.
3. Sensing danger Kattabomman with his brother’s help escaped from that place.
4. Kattabomman on his return to Panchalamkurichi represented to the Madras Council about his ill treatment by the collector Jackson.
5. Kattabomman appeared before the committee on 15th December 1798 and proved that he was not committed any offence.
6. He cleared almost all the revenue arrears.
7. Jackson was dismissed from his service.

Event 3: Inspired by the Marudhu brothers Tiruchirapaili proclamation Kattabomman was interested to join the confederacy.

1. Kattabomman and Marudhu brothers jointly decided on a confrontation with the English.
2. Kattabomman advanced towards Sivagiri who was a tributary to the company.
3. So the company considered Kattabomman’s expedition as a challenge to their authority.
4. Under the command of Bannerman on 1st September 1799 an ultimatum was served on Kattabomman to surrender.
5. The evasive reply of Kattabomman made Bannerman to attack the Fort of Panchalamkurichi.
6. Kattabomman escaped to Pudukottai.
7. The Britsh put a prize on his head.
8. Betrayed by the Rajas of Ettayapuram and Pudukottai Kattabomman was arrested.
9. During the trial before all the Palayakkarars he bravely admitted all the charges levelled against him.
10. He was hanged to death at Kayatharu near Tirunelveli on 16th October.
11. His courageousness and bravery was enacted as ballads by Indian folks.

Question 2.
Highlight the tragic fall of Sivagangai and its outcome.
Answer:
In May 1801, the English attacked the rebels in Thanjavur and Tiruchirappalli. The rebels went to Piranmalai and Kalayarkoil. But they were defeated by the forces of the English. In the end, the able commanders of the English company helped. Unfortunately, the rebellion failed and Sivagangai was annexed in 1801.
Outcomes

• The Marudhu brothers were executed in the fort of Tirupathur near Ramanathapuram on 24 October 1801.
• Oomaithurai and Sevathaiah were captured and beheaded at Panchalamkuruchi on 16 November 1801.
• Seventy-three rebels were exiled to Penang in Malaya.
• Though the Palayakkarars fell to the English, their exploits and sacrifices inspired later generations.

Question 3.
Account for the outbreak of Vellore Revolt in 1806.
Answer:
Causes for the outbreak of Vellore Revolt in 1806:

1. The Sepoys in the British Indian Army had a strong sense of resentment over low salary and poor prospects of promotion.
2. The English officers disrespect for the social and religious sentiments of the Indian sepoys also angered them.
3. Many sepoys families were in dire economic straits due to out break of famine in 1805 and the unsettled conditions caused by new land tenures.
4. The imprisonment of Tipu’s sons and the family members in Vellore Fort.

The immediate cause for the revolt was triggered by the new military regulations introduced by the Commander in Chief Sir John Cradock.

1. The Indian soldiers were not allowed to wear caste marks or ear rings when in uniform.
2. They were asked to shave their beard and trim the moustache to look smart.
3. The most resented cause was the leather cockade made of animal skin.
4. The sepoys were compelled to wear the turban and those who refused were severely punished.
5. In 10^th July 1806 in the early hours guns were booming and the Indian sepoys of the regiments 1^st and 23^rd raised their standard of revolt.

VIII. Activity

Question 1.
Teacher can ask the students to prepare an album of patriotic leaders of early revolts against the British rule in Tamil Nadu. Using their imagination they can also draw pictures of different battles in which they attained martyrdom.
Answer:
Few names of the patriotic leaders of the’early revolt against the British mle in Tamil Nadu are listed below.

1. Subramaniya Bharathiyar
2. Kumaraswamy Mudaliar (popularly known as Tiruppur Kumaran)
3. Velunachiyar
4. Vanchinathan
5. Veerapandia Kattabomman
6. V.O. Chidambaram
7. Dheeran Chinnamalai
8. Subramaniya Siva
9. The Maruthu Pandiyar brothers (Periya Maruthu, Chinna Maruthu)
10. Puli Thevar

Students can collect pictures of the above mentioned patriotic leaders and paste it in a notebook, prepare an album and submit to the teacher. Below the picture, student should also write the name of the patriotic leader below the picture.

If the student is very good in drawing skills, then instead of pasting pictures, they can also draw two or three of the patriotic leaders images and write their name below and prepare an album. Students can also use their creativity, imagine a battle field and can portrait that also.

Question 2.
Stage play visualising the conversation between Jackson and Kattabomman be attempted by students with the help of teachers.
Answer:
Stage play – Conversation between Jackson and Kattabomman.
Participants: Characters – Kattabomman, Subramanianar, Oomaithurai, Collector Jackson, Company officials soldiers.

Scence – 1 Kattabomman’s Court.

A company official reading the notice issued by collector Jackson. (Kattabomman’s soldier asking permission to let in the company official)

Sepoy : Maharaja, English East India Company’s servant brought a message for you. Shall I ask him to let in. I seek your permission.

Kattabomman : Allow him. (Servant entry)

Kattabomman: What message you have brought?

Servant : Maharaja (Reading the message)
I, “The collector of Ramnad” issuing order to Kattabomman to meet in person.

Kattabomman : yes you can go

Scene – 2

Kattabomman and his Minister and some soldiers going to meet Jackson after hearing he was camping at placard showing courtallam.

Collector has gone Srivilliputtur (Voice)

Placard showing Srivilliputur (You are asked to come to Ramanathapuram)

Scene – 3 (Ramanathapuram Fort)

Kattabomman waiting outside the gate to meet the Collector. After lhour he was asked to get inside the court of collector Jackson.

Jackson: Not noticing him wantedly I am
Kattabomman: I am kattabomman who is collector Jackson.
Jackson: Got angry Hay who are you nian calling me by name?
Kattabomman: I am Kattabomman wants to know who you are? Asking me the question.
(Further got irritated)
Jackson: I am collector Jackson. Are you the defiant Kattabomman.
Kattabomman: I want to know for what reason I was asked to come over here. As a coward ran and came to Ramanathapuram Mr. Jackson.
Jackson: Shut up man. You have the charge on you that you didn’t pay neither the tribute not the tax arrears.
(Irritated by his command)
Kattabomman: Whom do you expect to pay tribute or Taxes. Me? Why I should pay taxes. It’s our land the nature is giving water to the field. We the people till the land, sow the seeds plant the saplings watered the field, nurtured the plants, removed the weeds. What work you have done for asking the tax.
Jackson: Hay man Kattabomman you are talking too much, Your region belong to us.
Kattabomman: (Laughing) Is it so? Who gave you the right of possession?
Jackson: (Furiated yelling) Guards arrest him.
(Guards entry)
Kattabomman: Sensing the danger took out the sword (fighting and escaping from that place)
(screen)

Question 3.
A comparative study of Vellore Revolt and 1857 Revolt by students be tried enabling them to find out to what extent Vellore Revolt had all the forebodings of the latter.
Answer:
Common causes for the Revolt at Vellore and Revolt of 1857.

Vellore Revolt:

1. Most of the soldiers in the British army were well trained soldiers from various Palayams. Hindus and Muslims majority Indian Troops.
2. Resentment over low salary promotion prospects
3. New dress code, rules and regulations affected the religions sentiments.
4. Uprising was well planned and raised by the soldiers at Vellore Fort shot down many colonels
5. Immediate cause introduction of Agnew Turban- a leather hat made of animal skin.
6. Soldiers were forced to wear the Turban.
7. Spread to other areas Bellary, Bangalore, Hyderabad, Sankagiri, Walajabad, Nandy durg.
8. Fateh hyder Tipu’s son was declared as their leader.

Revolt of 1857:

1. Most of the soldiers were from Sikhs, Hindus and Muslims. Out numbered the English officers.
2. Same point of view low salary inferior out look of the English officers.
3. Conversion activities interference in the Indian culture affected their sentiments.
4. Revolt originated from Bengal regiment.
5. Introduction of Greased cartridges smeared with animal fat.
6. Indian soldiers were compelled to use the cartridges.
7. Spead to Kanpur, Delhi, Oudh, Jhansi, Lucknow, Bihar etc.
8. Emperor Bahadhur Shah II of Delhi was made to sit on the throne and declared as the emperor of India.

These points clearly shows that the Vellore Revolt had all the forebodings of the latter.

Samacheer Kalvi 10th Social Science Early Revolts against British Rule in Tamil Nadu Additional Important Questions And Answers

I. Choose the correct answer

Question 1.
Palayakkarars in Tamil refers to the:
(a) Holders of a little kingdom as a feudatory.
(b) Revenue collectors of the British
(c) Rebels of the Carnatic region
(d) Commanders of Nawab of Arcot
Answer:
(a) Holders of a little kingdom as a feudatory.

Question 2.
Palayakkarars police duties were known as ……………….
(a) Padikaval
(b) Village Kaval
(c) Irravu Kaval
Answer:
(a) Padikaval

Question 3.
The first female ruler of Sivagangai who resisted the colonial power of the British:
(a) Jhansi Rani Lakshmibai
(b) Rani Mangammal
(c) Velunachiyar
(d) Kuyili
Answer:
(c) Velunachiyar

Question 4.
Puli Thevar was defeated by …………… in 1767.
(a) Khan Sahib
(b) Captain Campbell
(c) Hyder Ali
Answer:
(b) Captain Campbell

Question 5.
The British commander who put down the Vellore revolt was:
(a) Bannerman
(b) William Bentinck
(c) Sir John cradock
(d) Colonel Gillespie
Answer:
(d) Colonel Gillespie

Question 6.
Who was Mahfuzkhan?
(a) Brother of the Nawab of Arcot
(b) Minister of the Nawab of Arcot
(c) Brother of Yusuf Khan
(d) Indian sepoy in the British army
Answer:
(a) Brother of the Nawab of Arcot

Question 7.
Veerapandiya Kattabomman was the Palayakkarar of :
(a) Sivagangai
(b) sivagiri
(c) Madurai
(d) Panchalamkurichi
Answer:
(d) Panchalamkurichi

Question 8.
Where did Kattabomman escape?
(a) Ettayapuram
(b) Coimbatore
(c) Pudukottai
(d) Tarapuram
Answer:
(c) Pudukottai

Question 9.
On his return to Panchalamkurichi ………………….. represented to the Madras council.
(a) Kattabomman
(b) Marudhu brothers
(c) Puli Thevar
(d) Dheeran chinnamalai
Answer:
(a) Kattabomman

Question 10.
Which city was annexed at the end of the Anglo-Mysore War in 1799?
(a) Ramanathapuram
(b) Coimbatore
(c) Panchalamkuruchi
(d) Pudukottai
Answer:
(b) Coimbatore

Question 11.
Jackson was dismissed from service and a new collector ………………….. was appointed.
(a) Syed
(b) Clarke
(c) William Brown
(d) S.R Lushington
Answer:
(d) S.R Lushington

Question 12.
Kattabomman cleared all the revenue arrears leaving only a balance of ………………….. pagodas.
(a) 1180
(b) 1080
(c) 1801
(d) 1108
Answer:
(b) 1080

Question 13.
Yadhul Nayak was the Palayakkarar of:
(a) Coimbatore
(b) Dindigul
(c) Anamalai
(d) Kamudhi
Answer:
(c) Anamalai

Question 14.
Oomathurai and Sevathaiah the two brothers of Kattabomman escaped from the Palayamkottai prison to:
(a) Kamudhi
(b) Sivagangai
(c) Kerala
(d) Thiruchirappalli
Answer:
(a) Kamudhi

Question 15.
………………….. involved in setting the disputes in the Kongu region.
(a) Dheeran chinnamalai
(b) Velunachiyar
(c) Oomathurai
(d) Gopala Nayak
Answer:
(a) Dheeran chinnamalai

II. Fill in the blanks

1. The word ………………….. means a domain a military camp or a little kingdom.
2. The Palayakkararsystem was in practice during the rule of ………………….. of warangal in the Kakatiya kingdom.
3. The police duties of Palayakkarars were known as …………………..
4. The Palayakkarars of Sivagiri, Ettayapuram and Panchalamkurichi did not join the confederacy of …………………..
5. The unity of the Palayakkarars began to break with the …………………..
6. In 1772 under the command of ………………….. stormed the kalaiyar kovil palace.
7. The South Indian confederacy was organised by
8. The forces of Diwan of Mysore and Chinnamalai fought at
9. The failed because there was no immediate help from outside.
10. The was the predecessor of the great Revolt of 1857.
11. Under poligar system was given for valuable military services rendered by any individual.
12. The began to consolidate and extend its influence after the three carnatic wars in Tamil Nadu.
13. ………………….. the Minister of viswanatha Nayaka helped him to introduce Palayakkarar system in Tamil Nadu.
14. The Palayakkarar system lasted for from ………………….. the Nayaks of Madurai.
15. Within their respective Palayams Palayakkarars function as ………………….. authorities.
16. Traditionally there were ………………….. Palayakkarars created by Nayak rulers.
17. Many Palayakkarars refused to pay taxes to the company as their lands handed down to them over …………………..
18. The company branded ………………….. as rebels.
19. Mahfuzkhan was the brother of …………………..
20. ………………….. was sent with a contingent army under colonel Heron to capture Tirunelveli and Madurai.
21. Mahfuzkhan had the support of ………………….. and ………………….. from the carnatic to capture Tirunelveli.
22. Two thousand soldiers from ………………….. joined the forces of Puli Thevar at kalakad.
23. The Palayakkarars of Tirunelveli under Puli Thevar constantly rebelled against
24. Yusufkhan’s (Khan sahib) original name was ………………….. before his conversion to Islam.
25. The ………………….. from Tiruchirappalli arrived in September 1760 to assist Yusufkhan to attack Puli Thevar.
26. The battering of ………………….. by Yusufkhan took two months.
27. Expel of French power from Pondicherry made Travancore, ………………….., Uthumalai and ………………….. to support the English.
28. The ………………….. was charged with treachery and hanged in 1764 by the company.
29. Captain ………………….. defeated Puli Thevar in 1767.
30. Puli Thevar escaped and died in …………………..
31. Velunachiyar was under the protection of Gopala Nayak for ………………….. years.
32. At the age of 16 ………………….. was married to Muthuvadugar of Sivagangai.
33. Dalavay means …………………..
34. In behalf of Velunachiyar Dalavai ………………….. wrote a letter to Sultan Hyder AN seeking military assistance.
35. Hyder Ali ordered his commandant ………………….. in Dindigul Fort to provide required military assistance to Velunachiyar.
36. Kuyili faithful friend of Velunachiyar led a unit of women soldiers named after …………………..
37. ………………….. was the shepherd girl who was killed by the company for not divulging information on kuyili the commander.
38. The company’s administrators ………………….. and ………………….. considered Kattabomman a man of peaceful disposition.
39. To meet out the expenses of Nawab and his family ………………….. of the revenue (taxes) collection was allowed.
40. The land revenue arrear from Kattabomman was ………………….. pagodas in 1798.
41. The did not give permission to collector Jackson to send an army to Panchalamkurichi to collect dues from Kattabomman.
42. Kattabomman’s Minister ………………….. accompanied him to Ramanathapuram to met collector Jackson.
43. In a clash at the gate of Ramanathapuram Fort English officer ………………….. was killed.
44. In may 1799 ………………….. issued orders from Madras for the advance of forces to Tirunelveli.
45. Bannerman moved his entire army to Panchalamkurichi on …………………..
46. ………………….. gathered all the secrets of the Fort of Panchalamkurichi.
47. In a clash at ………………….. Sivasubramanianar was taken a prisoner.
48. Kattabomman escaped to …………………..
49. ………………….. was executed at Nagalapuram on 13th September.
50. Kattabomman was hanged from a ………………….. in the old Fort of Kayathar.

Answers:

1. Palayam
2. Prataba Rudhra
3. Padikaval or Arasukaval
4. Puli Thevar
5. elimination of French power from Pondicherry
6. Lt. Col Bon Jour
7. Marudhu brothers of Sivagangai
8. Noyyal river bed
9. Vellore Revolt
10. Vellore Revolt
11. Palayam
12. English East India Company
13. Ariyanathar
14. two hundred years
15. independent sovereign
16. 72
17. sixty generations
18. defiant Palayakkarars
19. Nawab of Arcot
20. Mahfuzkhan
21. cavalry and foot soldiers
22. Travancore
23. Nawab’s authority
24. Marudhunayagam
25. artillary
26. Nerkkatumseval Fort
27. Seithur, Surandai
28. Yusufkhan
29. Campbell
30. exile
31. eight
32. Velunachiyar
33. Military chief
34. Thandavarayanar
35. Syed
36. Udaiyal
37. Udaiyal
38. James London, Colin Jackson
39. one- sixth
40. 3310
41. Madras Government
42. Sivasubramanianar
43. Lietenant Clarke
44. Lord Wellesley
45. 5th September 1799
46. Ramalinganar
47. Kallarpatti
48. Pudukottai
49. Sivasubramanianar
50. Tamarind tree

III. Choose the correct statement

Question 1.
(i) Velunachiyar organised an army and succeeded in securing an alliance with Hyder Ali.
(ii) Hyder Ali provided the required military assistance to Velunachiyar
(iii) A fierce battle was fought at Devadanampatti.
(iv) Velunachiyar escaped with her daughter and lived in Ramanathapuram.
(a) (i), (ii) and (iv) are correct
(b) (i), (iii) and (iv) are correct
(c) (ii) and (iii) are correct
(d) (i) and (ii) are correct
Answer:
(d) (i) and (ii) are correct

Question 2.
(i) Dheeran chinnamalai was trained by the French.
(ii) He launched Gwerilla attack and evaded capture by the British.
(iii) He was born at Coimbatore,
(iv) He refused to accept the rule of the British.
(a) (i), (ii) and (iv) are correct
(b) (i), (ii) and (iii) are correct
(c) (iii) and (iv) are correct
(d) (i) and (iii) are correct
Answer:
(a) (i), (ii) and (iv) are correct

Question 3.
(i) Coimbatore was annexed at the end of the Anglo – Mysore was in 1799.
(ii) The status of Raja of Thanjavur had been reduced to that of a vassal.
(iii) English East India company acquired the revenue districts of salem and Dindigul from Tipu.
(iv) A treaty was forced on Marudhu brothers on the charge of disloyalty.
(a) (i), (iii) and (iv) are correct
(b) (i), (ii) and (iii) are correct
(c) (i) and (iv) are correct
(d) (ii) and (iv) are correct
Answer:
(b) (i), (ii) and (iii) are correct

Question 4.
Assertion (A): Kattabomman took an expedition to Sivagiri to influence to join Marudhu brothers.
Reason (R): Palayakkarars of Sivagiri was a tributory to the company of the British. They refuse to join.
(a) Both A and R are correct. R is the correct explanation of A.
(b) A is correct and R is Wrong
(c) A is wrong ans R is correct
(d) A is correct and R is not the correct explanation of A.
Answer:
(a) Both A and R are correct. R is the correct explanation of A.

Question 5.
Assertion (A): Chinna Marudhu collected 20,000 men to challenge the English army and many Palayakkarars joined, but failed.
Reason (R): Divide and Rule Policy of the British split the forces of the Palayakkarars.
(a) A is correct R is wrong
(b) A is wrong and R is correct
(c) Both A and R are correct and R is the correct explanation of A.
(d) A is correct but R is not the correct explanation of A.
Answer:
(c) Both A and R are correct and R is the correct explanation of A.

Question 6.
Assertion (A): The Nawab of Arcot gave the power of collecting revenue to the English East India company from southern Palayakkarars.
Reason (R): The company branded the defiant Palayakkarars as rebels.
(a) A is correct R is wrong
(b) A is wrong R is correct
(c) Both A and R are correct R explains A.
(d) Both A and R are correct. R is not the correct explanation to A.
Answer:
(a) A is correct R is wrong

IV. Match the following

Question 1.
Match the Column I with Column II.

Answer:
A. (iii)
B. (v)
C. (iv)
D. (i)
E. (ii)

Question 2.
Match the Column I with Column II.

Answer:
A. (iv)
B. (i)
C. (v)
D. (ii)
E. (iii)

V. Answer the questions briefly

Question 1.
Write a note on Carnatic treaty.
Answer:
The suppression of the Palayakkarar rebellions of 1799 and 1800-1801 resulted in the liquidation of all the local chieftains of Tamil Nadu. Under the terms of the Carnatic treaty of 31 July 1801. The British assumed direct control over Tamilagam and the Palayakarar system to an end with the demolition of all forts and disbandment of their army.

Question 2.
Why was the Revenue collection of the southern Palayakkarars was given to the company Rule?
Answer:

1. Nawab of Arcot had borrowed money from the East India Company to meet the expenses he had incurred during the camatic wars.
2. When the debts exceeded his capacity to pay, he gave the Revenue Collection Authority to the company rule.

Question 3.
Write a note on Hyder Ali.
Answer:
Hyder Ali was the ruler of Mysore. He was a bitter enemy of England. He was born in 1772. Though he started his career as a soldier, he rose to the position of commander-in-chief. In 1766, when the Raja of Mysore died, Hyder Ali proclaimed himself as the ruler and became the Sultan of Mysore. Tipu Sultan was the son of Hyder Ali.

Question 4.
Name the three major ports of Puli Thevar. When did these forts come under the control of Yusuf Khan?
Answer:
The three major ports of Puli Thevar were Nerkattumseval, Vasudevanallur and Panayur. In 16th May 1761 they came under the control of Yusufkhan.

Question 5.
What does the word ‘Palayam’ mean? What does the Palayakkarar in Tamil refer to?
Answer:
The word ‘Palayam’ means a domain, military camp, or a little kingdom. The Palayakkarar in Tamil refers to the holder of a little Kingdom as a feudatory to a greater sovereign.

Question 6.
Write about the brave act of Kuyili the friend of Velunachiyar.
Answer:

1. Kiyili was a faithful friend of velunachiyar.
2. She led the unit of women soldiers.
3. Kuyili is said to have walked in to the British arsenal (1780) after setting herself on fire, destroying all the ammunition.

Question 7.
Why did the Nawab of Arcot borrow money from the East India company? What happened when his debts exceeded his capacity to pay?
Answer:
The Nawab of Arcot borrowed money from the East India company to meet the expenses he had incurred during the Carnatic wars. When his debts exceeded his capacity to pay, the power of collecting the land revenue dues from southern Palayakkarars was given to the East India company.

Question 8.
How the Rebellion of Marudhu brothers referred as and who participated in the rebellion?
Answer:
In the British records the rebellion of Marudhu brothers (1800) is referred as the “Second Palayakkarar war”.

Those who participated in the Rebellion were: Marudhu Pandiyar of Sivagangai, Gopala Nayak of a Dindigul, Kerala verma of Malabar and Krishnappa Nayak and Dhoondaj i of Mysore.

VI. Answer the questions given under each caption

Question 1.
Siege of Panchalamkuruchi
(a) Why did Lord Wellesley issue orders in May 1799?
Answer:
Lord Wellesley issued orders in May 1799 for the advance of forces from Tiruchirapalli, Thanjavur, and Madurai to Tirunelveli.

(b) Who commanded the troops?
Answer:
Major Bannerman commanded the troops.

(c) What commanded the troops?
Answer:
On 1st September 1799, an ultimatum was served on Kattabomman to surrender.

(d) Why did Bannerman depute Ramalinganar to Kattabomman’s fort?
Answer:
Bannerman deputed Ramalinganar to Kattabomman’s fort so that he could convey a message asking him (Kattabomman) to surrender.

Question 2.
Consequences of Vellore Revolt

(a) Where was Tipu’s sons imprisoned after the revolt?
Answer:
Tipu’s sons were sent to Calcutta after the revolt.

(b) What was the reward given to the people who suppressed the revolt?
Answer:
Col. Gillespie was given 7,000 pagodas. The officers and men engaged in the suppression were rewarded with prize money and promotion.

(c) Name the English Generals who were removed from their office?
Answer:
Col. Sir John Cradock, Adjutant General Agnew and Governor William Bentinck were removed from their office.

(d) What was withdrawn after the revolt?
Answer:
The military regulations were withdrawn after the revolt.

Question 3.
New Military Regulations
(a) What were the Indian soldiers asked to do according to new’ military regulation?
Answer:
According to the new military regulation the Indian soldiers were asked not to wear caste marks or ear rings when in uniform. They were to be cleanly shaven on the chin and maintain uniformity how their moustache looked.

(b) How did the new turban add fuel to fire?
Answer:
The new turban was the leather cockade made of animal skin.

(c) How did the sepoys react to the new turban?
Answer:
The sepoys refused to wear the new turban.

(d) What was the Company’s reaction?
Answer:
The company remained silent. It did not pay any notice to the sepoys grievances.

Question 4.
The Seige of Panchalamkurichi

(a) From which regions forces were sent to Tirunelveli?
Answer:
From the regions of Tiruchirappali, Thanjavur and Madurai sent to Tirunelveli.

(b) Which troops joined the British later?
Answer:
The Travancore troops joined the British later.

(c) What was served on Kattabomman and for what purpose?
Answer:
An ultimatum was served on Kattabomman to surrender.

(d) What was the response of Kattabomman?
Answer:
Kattabomman refused to surrender.

Question 5.
Proclamation of 1801

(a) Who issued the proclamation of 1801?
Answer:
Marudhu pandiyar issued the proclamation of Independence 1801.

(b) Why did they issue the proclamation?
Answer:
The proclamation was an early call to the Indians to unite.

(c) Where was the copies of proclamation pasted?
Answer:
The proclamation was pasted on the walls of Nawab’s palace in Tiruchirappalli Fort and on the walls of Srirangam temple.

(d) From where did the forces reinforced to fight with the revolters?
Answer:
British reinforcements were rushed from Bengal, Ceylon and Malaya.

Question 6.
Grievances of Indian Soldiers

(a) Who deliberate on the future course of action against the company Government?
Answer:
The dispossessed little kings and feudal chieftains.

(b) What was the culmination of the Palayakkarar wars?
Answer:
The Vellore Revolt of 1806

(c) What were the resentment of British Indian army?
Answer:
The British Indian army had a strong resentment over low salary and poor prospects of promotion.

(d) What bothered the Indian sepoys much?
Answer:
The new recruitment of the sepoys to the army.

VII. Answer in detail

Question 1.
Write a brief note on Vellore Mutiny.
Answer:

• The British administration prohibited the Hindu soldiers from smearing religious marks on their foreheads.
• They ordered the Muslims to shave their beard and trim their moustache.
• This created a strong resentment among the soldiers.
• Instigated by the sons of Tipu, the revolting soldiers gathered in the Vellore fort, under the pretext of a marriage function.
• At midnight the soldiers surrounded the fort and killed most of the Europeans.
• They unfurled the flag of Tipu over the fort.
• Fateh Hyder, the second Son of Tipu was declared as the ruler.
• But the revolt was crushed by the British.

Question 2.
How did Velunachiyar able to get back her territory (Sivagangai)?
Answer:

1. Velunachiyar during her period of hiding organised an army.
2. She succeeded in securing an alliance with not only Gopala Nayakar (Virupachi near Dindigul) but Hyder Ali as well.
3. She was affluent in Urdu. Velunachiyar explained in detail in urdu all the problems she had with East India Company.
4. She conveyed her strong determination to fight the English.
5. Impressed by her courage, Hyder Ali ordered his commandant Syed in Dindigal fort to provide the necessary military assistance.
6. Velunachiyar employed agents for gathering intelligence to find where the British had stored ammunition.
7. With military assistance from Gbpala Nayakar and Hyder Ali she recaptured Sivagangai.
8. She was crowned as queen with the help of Marudhu brothers.
9. She was the first female ruler to resist the British colonial power in India.

Question 3.
Write about the Dindigul League.
Answer:

1. The famous Dindigul league was headed by Gopala Nayak, the Palayakkarar of virupachi.
2. He formed the league with Lakshmi Nayak of Manaparai and poojai Nayak of Devadanapatti.
3. He drew the inspiration from Tipu Sultan, who sent a deputation to show his camaraderie.
4. He led the resistance against the British from Coimbatore and later joined Oomaidurai, Kattabomman’s brother.
5. He put up a fierce fight at Aanamalai hills.
6. The local peasants gave him full support.
7. But Gopala Nayak was overpowered by the British forces in 1801.

Question 4.
Give an account of Marudhu brothers Rebellion of 1800.
Answer:

1. Despite the suppression of Kattabomman’s revolt in 1799 rebellion broke out again in 1800.
2. In the British records it is referred to as the second Palayakkarar war.
3. In April 1800 the confederacy consisting of Marudhu Pandiyars of Sivagangai, GopalaNayak of Dindigul, Kerala verma of malabar and Krishnappa Nayak and Dhoondaji of Mysore met at Virupachi and decided to organise an uprising against the company.
4. The Uprising, which broke out in Coimbatore in June 1800, soon spread to Ramanathapuram and Madurai.
5. The company got wind of it and declared war on Krishnappa Nayak of Mysore, Kerala Verma of Malabar and others.
6. The Palayakars of Coimbatore, Sathyamangalam, and Tarapuram were caught and hanged.
7. In February 1801, the two brothers of Kattabomman, Oomathurai and Sevathaiah escaped from Palayamkottai prison and Chinna Marudhu took them to Siruvayal his capital.
8. The English demanded the Marudhu Pandiyars to hand over fugitives but they refused.
9. Col.Agnew and Col.Innes marched on Sivagangai.
10. In June 1801 Marudhu Pandyars issued a proclamation of independence the Tiruchirappalli proclamation.
11. The rebellion failed and Sivagangai was annexed in 1801.

VIII. Map Study

Mark important centres of Early revolts against British Rule in Tamil Nadu.

Map: Centres of Early Revolts against British Rule in Tamil Nadu