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

If an amount of heat enters the system it could

Question # 2

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 3

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Question # 4

In all natural processes where heat flows from one system to another, there is always a net

Question # 5

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 # 6

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

Question # 7

When heat is removed from the system

Question # 8

When two objects are rubbed together, their internal energy

Question # 9

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

Question # 10

The temperature scale approved in SI units is:

Question # 11

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

Question # 12

The pressure exerted by the gas is

Question # 13

The absolute temperature of the tripple point of water is

Question # 14

During the whole carnot cycle

Question # 15

The example of irreversible process is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
2 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
3 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
4 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
5 In a heat engine, heat is supplied by the
A. cold reservoir
B. sink
C. hot reservoir
D. none of them
6 At constant temperature, if the density of the gas is increased, its pressure will:
A. One kg of a substance
B. Unit volume of a substance
C. One mole of a substance
D. None of these
7 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
8 The disorder in the system increases due to the
A. removal of heat
B. addition of heat
C. removal or addition of heat
D. none of them
9 Pressure of a gas at constant volume is proportion to
A. Total energy of gas
B. Average P.E to molecules
C. Average K.E of molecules
D. Total internal energy of gas
10 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

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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