ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

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

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ECAT Physics Chapter 11 Heat & Thermodynamics

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Question # 1

On colliding in a closed container, the gas molecules

Question # 2

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 3

A diatomic gas molecule has

Question # 4

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 5

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

Question # 6

A heat engine is that which converts

Question # 7

If an amount of heat enters the system it could

Question # 8

The curve representing an adiabatic process is called

Question # 9

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 10

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

Question # 11

One mole of any substance contain

Question # 12

Melting point of ice

Question # 13

Good absorbers of heat are

Question # 14

The motion of molecules in gases is:

Question # 15

The process which is carried out at constant temperature is known as

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 One mole of any substance contain
A. same number of molecules
B. different number of molecules
C. may be same or different
D. none of them
2 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
3 A real gas can be approximated to an ideal gas at
A. Low density
B. High pressure
C. High density
D. Low temperature
4 On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed
A. adiabatically
B. isothermally
C. isochorcally
D. isobarically
5
During the whole carnot cycle
A. Thermal equilibrium is maintained
B. mechanical equilibrium is maintained
C. both the thermal and mechanical equilibriumis maintained
D. both the thermal and mechanical equilibrium is not maintained
6 Good absorbers of heat are
A. Poor emitters
B. Non emitters
C. Good emitters
D. Highly polarized
7 If a process cannot be retraced in the backward direction by reversing the controlling factors, it is
A. a reversible process
B. an irreversible process
C. any one of them
D. both of them
8 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them
9 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
10 We cannot utilize the heat contents of oceans and atmosphere because
A. there is no reservoir at the same temperature
B. there is no reservoir at the temperature lower than any one of two
C. there is no reservoir at the temperature higher than any one of two
D. none of them

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