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

Which of the following is not an assumption of kinetic energy

Question # 2

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

Question # 3

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

Question # 4

Efficiency of carnot engine is independent of the

Question # 5

If the distance between two charges is doubled, the force between them will become:

Question # 6

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 7

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Question # 8

When heat is removed from the system

Question # 9

Electromagnetic waves emitted by hot bodies are called:

Question # 10

A succession of events which bring the system back to its initial condition is called

Question # 11

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

Question # 12

Pressure may be define as _______ per second per unit area:

Question # 13

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

Question # 14

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

Question # 15

Boyle's law is applicable in

Question # 16

Which quantity is important in stating the entropy of the system

Question # 17

The efficiency of diesel engine is

Question # 18

During the whole carnot cycle

Question # 19

The motion of molecules in gases is:

Question # 20

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

Question # 21

The value of E0in coulomb's law is:

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 real gas can be approximated to an ideal gas at

Question # 24

Which of the following is not thermo dynamical function?

Question # 25

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

Question # 26

In thermodynamics, internal energy is the function of

Question # 27

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

Question # 28

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

Question # 29

Rate of diffusion is

Question # 30

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
2 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
3 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
4 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
5 The only significant motion possessed by the mono-atomic gas represented is:
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
6 While deriving the equation for pressure of a gas we consider the
A. rotational motion of molecules
B. vibrational motion of molecules
C. linear motion of molecules
D. all of them
7 On colliding in a closed container, the gas molecules
A. Transfer momentum to the walls
B. Momentum becomes zero
C. Move in opposite directions
D. Perform Brownian motion
8 The example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
9 A real gas can be approximated to an ideal gas at
A. Low density
B. High pressure
C. High density
D. Low temperature
10 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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