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

A process in which no heat enters or leaves the system is called

Question # 2

Truth of kinetic energy is confirmed by:

Question # 3

We can express the work in term of

Question # 4

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

Question # 5

The temperature of gas is produced by

Question # 6

Rate of diffusion is

Question # 7

The example of reversible process is

Question # 8

Which of the following is not an example of adiabatic process

Question # 9

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

Question # 10

When two objects come to common temperature, the body is said to be in:

Question # 11

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

Question # 12

Adiabatic change occurs when the gas

Question # 13

Efficiency of carnot engine is independent of the

Question # 14

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 15

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

Question # 16

The curve representing an adiabatic process is called

Question # 17

In an ideal gas, the molecules have:

Question # 18

Real gases strictly obey gas law at:

Question # 19

On colliding in a closed container, the gas molecules

Question # 20

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

Question # 21

Hotness and coldness of an object is represented in terms:

Question # 22

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

Question # 23

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

Question # 24

In the formula P = N0KT, N0denotes:

Question # 25

A real gas can be approximated to an ideal gas at

Question # 26

A reversible cycle is the one in which

Question # 27

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

Question # 28

The earliest heat engine was

Question # 29

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

Question # 30

First law of thermodynamics is consequence of conservation of

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT
2 One mole of any substance contain
A. same number of molecules
B. different number of molecules
C. may be same or different
D. none of them
3 For making cooking utensils, which of the following pairs of properties is most suited?
A. Low specific heat and high conductivity
B. Low specific heat and low conductivity
C. High specific heat and high conductivity
D. High specific heat and low conductivity
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 Absolute zero is considered as that temperature at which:
A. All liquid become gases
B. All gases become liquid
C. Water freezes
D. None of these
6 The pressure of gas everywhere inside the vessel will be the same provided the gas is of
A. Non-uniform density
B. uniform density
C. high density
D. low density
7 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
8 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
9 The volume of universal gas constant R is:
A. 8.314 J/K mole K
B. 8314 J/K mole K
C. 8.314 J/mole K
D. None of these
10 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

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