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

At O° K which of the following properties of a gas will be zero?

Question # 2

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Question # 3

The temperature scale approved in SI units is:

Question # 4

Absolute temperature can be calculated by

Question # 5

Maximum density of H2O is at the temperature

Question # 6

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

Question # 7

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

Question # 8

The rate of change of momentum of a molecule is equal to:

Question # 9

Which of the following is not an assumption of kinetic energy

Question # 10

The internal energy of an ideal gas system is generally the

Question # 11

The absolute temperature for an ideal gas is

Question # 12

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

Question # 13

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

Question # 14

While deriving the equation for pressure of a gas we consider the

Question # 15

Carnot heat engine only used

Question # 16

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 17

When heat is removed from the system

Question # 18

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

Question # 19

The basis to define a temperature scale that is independent of material properties is provided by

Question # 20

Which of the following is a state variable

Question # 21

The example of reversible process is

Question # 22

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

Question # 23

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

Question # 24

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 25

Boyle's law is applicable in

Question # 26

Which of the following is not an example of adiabatic process

Question # 27

The temperature of gas is produced by

Question # 28

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 29

The value of E0in coulomb's law is:

Question # 30

Generally a temperature scale is established by

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure
A. A greater than than of B
B. A is equal to that of B
C. A is less than that of B
D. A is twice the pressure of B
2 A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called
A. reversible process
B. irreversible process
C. any one of them
D. none of them
3 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
4 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
5 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2
6 Carnot heat engine only used
A. isothermal processes
B. adiabatic processes
C. both of them
D. none of them
7 In the study of thermodynamics, which gas is considered as the working substance
A. real gas
B. ideal gas
C. any gas may be ideal or real
D. none of them
8 The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at
A. 100 K
B. 273 K
C. 0 K
D. -273 K
9 At what temperature the adiabatic change is equivalent to the isothermal change?
A. Zero degree Celsius
B. Zero Kelvin
C. Critical temperature
D. Above critical temperature
10 We cannot utilize the heat contents of oceans and atmosphere because
A. there is no reservoir at the same temperature
B. there is no reservoir at the temperature lower than any one of two
C. there is no reservoir at the temperature higher than any one of two
D. none of them

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