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

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

Question # 2

During the whole carnot cycle

Question # 3

The absolute temperature of the tripple point of water is

Question # 4

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

Question # 5

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 6

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

Question # 7

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

Question # 8

The number of translation degress of freedom for a diatomic gas is

Question # 9

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

Question # 10

If the formula PV = nRT, n denotes:

Question # 11

When heat is removed from the system

Question # 12

Which of the following is not an assumption of kinetic energy

Question # 13

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 14

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

Question # 15

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 16

The percentage of available heat energy converted into work by a diesel engine is roughly

Question # 17

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 18

Average KE of a gas molecule has:

Question # 19

The Boltzman constant has the value

Question # 20

If an amount of heat enters the system it could

Question # 21

In the theory of dimensional analysis, heat may be properly represented by:

Question # 22

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 23

A diatomic gas molecule has

Question # 24

The temperature of gas is produced by

Question # 25

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 26

The rate of change of momentum of a molecule is equal to:

Question # 27

Electromagnetic waves emitted by hot bodies are called:

Question # 28

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

Question # 29

The value of E0in coulomb's law is:

Question # 30

The nature of thermal radiation is similar to:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The bicycle pump provides a good example of
A. first law of thermodynamics
B. second law of thermodynamics
C. third law of thermodynamics
D. none of them
2 The nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of these
3 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
4 Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:
A. N = nNAm = MNA
B. n = N NA, M = mNA
C. M = NA/N , NA= m/n
D. N = nNA, M = mNA
5 In all natural processes where heat flows from one system to another, there is always a net
A. decrease in entropy
B. increase in entropy
C. decrease or increase in entropy
D. none of them
6 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
7 In the theory of dimensional analysis, heat may be properly represented by:
A. ML2T-2
B. MT-2
C. ML-1T-1
D. None of these
8 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
9 The behaviour of gases is well accounted by the kinetic theory based on
A. microscopic approach
B. macroscopic approach
C. both of them
D. none of them
10 The product of the pressure and volume of an ideal gas is
A. A constant
B. Approximately equal to the universal gas constant
C. Directly proportional to its temperature
D. Inversely proportional to its temperature

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