ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

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

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Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

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Question # 1

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 2

Average KE of a gas molecule has:

Question # 3

Rice takes longest to cook

Question # 4

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

Question # 5

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

Question # 6

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 # 7

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

Question # 8

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

Question # 9

At O° K which of the following properties of a gas will be zero?

Question # 10

Brownian motion increases due to

Question # 11

Gas constant per molecule is called:

Question # 12

The second law of thermodynamics is concerned with the circumstances in which

Question # 13

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

Question # 14

Which of the following is not an assumption of kinetic energy

Question # 15

Boyle's law is applicable in

Question # 16

The basis to define a temperature scale that is independent of material properties is provided by

Question # 17

Rate of diffusion is

Question # 18

The pressure exerted by the gas is

Question # 19

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

Question # 20

Melting point of ice

Question # 21

First law of thermodynamic is special case of

Question # 22

Efficiency of carnot engine is independent of the

Question # 23

In an adiabatic process the work is done at the expense of the

Question # 24

The unit of thermodynamical scale is

Question # 25

The Boltzman constant has the value

Question # 26

For the working of a heat engine, there must be

Question # 27

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

Question # 28

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

Question # 29

Electromagnetic waves emitted by hot bodies are called:

Question # 30

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
2 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
3 When the temperature of source and sink of a heat engine become equal entropy change will be
A. Zero
B. Max
C. Min
D. -ve
4 One kilogram of different substances contain
A. same number of molecules
B. different number of molecules
C. may be same or different
D. none of them
5 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them
6 If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy
A. 0 J
B. 2 J
C. 5 J
D. 10 J
7 The internal energy of an ideal gas system is generally the
A. translational K.E of molecules
B. vibrational K.E of molecules
C. rotational K.E of molecules
D. all of them
8 Energy gas behaves like an ideal gast at
A. High temperature and low pressure
B. Low temperature and high pressure
C. Both A and B
D. None
9 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
10 Average KE of a gas molecule has:
A. Direct relation with absolute temperature and inverse relation with pressure
B. Direction relation with both absolute temperature and pressure
C. Inverse relation with both absolute temperature and pressure
D. None of these

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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