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

Which of the following does not have the same units:

Question # 2

In which process the condition for the application of Boyle's law on the gas is fulfilled

Question # 3

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Question # 4

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

Question # 5

A diatomic gas molecule has

Question # 6

We cannot utilize the heat contents of oceans and atmosphere because

Question # 7

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

Question # 8

The internal energy of an ideal gas system is generally the

Question # 9

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Question # 10

Sadi carnot described an ideal heat engine in

Question # 11

The Boltzman constant has the value

Question # 12

One kilogram of different substances contain

Question # 13

Efficiency of carnot engine is independent of the

Question # 14

The only significant motion possessed by the mono-atomic gas represented is:

Question # 15

Truth of kinetic energy is confirmed by:

Question # 16

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

Question # 17

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 18

The concept of entropy was introduced into the study of thermodynamics in

Question # 19

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

Question # 20

On colliding in a closed container, the gas molecules

Question # 21

If the formula PV = nRT, n denotes:

Question # 22

The unit of thermodynamical scale is

Question # 23

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 24

For the working of a heat engine, there must be

Question # 25

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

Question # 26

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

Question # 27

When heat is removed from the system

Question # 28

In the formula P = N0KT, N0denotes:

Question # 29

The nature of thermal radiation is similar to:

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Hotness and coldness of an object is represented in terms:
A. Heat
B. Temperature
C. Chemical energy
D. None of these
2 If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then
A. Cp- Cv= R
B. Cp- Cv < R
C. Cp- Cv = 0
D. Cp- Cv > R
3 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
4 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
5 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
6 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
7 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
8 Pressure exerted by a gas is
A. Independent of density of the gas
B. Inversely proportional to the density of the gas
C. Directly proportional to the square of the density of the gas
D. Directly proportional to the density of the gas
9 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
10 The second law of thermodynamics is concerned with the circumstances in which
A. heat can be converted into work
B. direction of flow of heat
C. none of them
D. both of them

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