ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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Question # 1

Gas constant per molecule is called:

Question # 2

The curve representing an isothermal process is called

Question # 3

The unit of thermodynamical scale is

Question # 4

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Question # 5

Absolute zero is considered as that temperature at which:

Question # 6

The behaviour of gases is well accounted by the kinetic theory based on

Question # 7

A heat engine is that which converts

Question # 8

Amount of heat required to raise the temperature of a body through 1 K is called its

Question # 9

In which process the condition for the application of Boyle's law on the gas is fulfilled

Question # 10

The product of the pressure and volume of an ideal gas is

Question # 11

The concept of entropy was introduced into the study of thermodynamics in

Question # 12

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 13

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

Question # 14

Melting point of ice

Question # 15

While deriving equation of pressure by kinetic theory of gases, we take into account:

Question # 16

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

Question # 17

For the working of a heat engine, there must be

Question # 18

One kilogram of different substances contain

Question # 19

The ideal gas law is

Question # 20

If the volume of the gas is to be increased by 4 times, then

Question # 21

Brownian motion increases due to

Question # 22

The motion of molecules in gases is:

Question # 23

Heat travels through vacuum by

Question # 24

Maximum density of H2O is at the temperature

Question # 25

Efficiency of carnot engine is independent of the

Question # 26

Pressure of a gas at constant volume is proportion to

Question # 27

The absolute temperature for an ideal gas is

Question # 28

Pressure exerted by a gas is

Question # 29

We can express the work in term of

Question # 30

In the formula P = N0KT, N0denotes:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
2 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
3 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
4 The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be
A. 2.0 x 10-5/°C
B. 4.0x10-5/°C
C. 6.0x10-5/°C
D. 2.33x10-5/°C
5 In thermodynamics, internal energy is the function of
A. temperature
B. pressure
C. state
D. none of them
6 In which process the condition for the application of Boyle's law on the gas is fulfilled
A. isochoric process
B. adiabatic process
C. isothermal process
D. none of them
7 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
8 The example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
9 If a liquid is heated in weightlessness, the heat is transmitted through
A. Conduction
B. Convection
C. Radiation
D. Neither, because the liquid cannot be heated in weightlessness
10 The pressure exerted by the gas is
A. directly proportional to the P.E
B. inversely proportional to the P.E
C. inversely proportional to the K.E
D. directly proportional to the K.E

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