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

While deriving the equation for pressure of a gas we consider the

Question # 2

Melting point of ice

Question # 3

A process is a reversible process, if the entropy of the system

Question # 4

In the study of thermodynamics, which gas is considered as the working substance

Question # 5

The efficiency of diesel engine is

Question # 6

The state in which ice, water and vapour coexists in equilibrium is called

Question # 7

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 8

At constant volume temperature is increased. Then

Question # 9

If an amount of heat enters the system it could

Question # 10

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

Question # 11

The work done on the system by the environment is considered as

Question # 12

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

Question # 13

A reversible cycle is the one in which

Question # 14

The example of irreversible process is

Question # 15

The temperature of gas is produced by

Question # 16

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 17

According to the second law, which is must to produce work

Question # 18

The ideal gas law is

Question # 19

An isochoric process is one which take place at

Question # 20

When two objects are rubbed together, their internal energy

Question # 21

Triple point of water is

Question # 22

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

Question # 23

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Question # 24

When heat is removed from the system

Question # 25

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

Question # 26

When heat is added into the system then change in entropy is

Question # 27

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 28

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

Question # 29

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

Question # 30

Which of the following is not an assumption of kinetic energy

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The earliest heat engine was
A. petrol engine
B. diesel engine
C. electric engine
D. steam engine
2 Sadi carnot described an ideal heat engine in
A. 1820
B. 1840
C. 1860
D. 1880
3 Generally a temperature scale is established by using certain physical properties of a material which varies
A. nonlinearly with temperature
B. linearly with temperature
C. either of them
D. none of them
4 Which of the following does not have the same units:
A. Work
B. Heat
C. Kinetic energy
D. Power
5 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
6 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
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 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
9 Hotness and coldness of an object is represented in terms:
A. Heat
B. Temperature
C. Chemical energy
D. None of these
10 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

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