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

00:00
Question # 1

A diatomic gas molecule has

Question # 2

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

Question # 3

No spark plug is needed in

Question # 4

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

Question # 5

Gas constant per molecule is called:

Question # 6

If the formula PV = nRT, n denotes:

Question # 7

We can express the work in term of

Question # 8

Absolute zero is considered as that temperature at which:

Question # 9

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

Question # 10

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

Question # 11

The unit of thermodynamical scale is

Question # 12

Good absorbers of heat are

Question # 13

The example of reversible process is

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

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

Question # 16

Rate of diffusion is

Question # 17

Truth of kinetic energy is confirmed by:

Question # 18

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

Question # 19

The absolute temperature for an ideal gas is

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

A carnot cycle consists of

Question # 25

Which of the following is a state variable

Question # 26

An isochoric process is one which take place at

Question # 27

Internal energy is the sum of all the forms of

Question # 28

Electromagnetic waves emitted by hot bodies are called:

Question # 29

If the volume of the gas is to be increased by 4 times, then

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
2 The motion of molecules in gases is:
A. Orderly
B. Random
C. Circular
D. All of these
3 On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves
A. outwards
B. inwards
C. in either way
D. none of these
4 A succession of events which bring the system back to its initial condition is called
A. reversible process
B. irreversible process
C. a cycle
D. none of them
5 Boyle's law is applicable in
A. Isochoric process
B. Isothermal process
C. Isobaric process
D. Isotonic process
6 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
7 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
8 Hotness and coldness of an object is represented in terms:
A. Heat
B. Temperature
C. Chemical energy
D. None of these
9 An isochoric process is one which take place at
A. Constant internal energy
B. Constant entropy
C. Constant volume
D. Constant pressure
10 Generally a temperature scale is established by using certain physical properties of a material which varies
A. nonlinearly with temperature
B. linearly with temperature
C. either of them
D. none of them

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