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

The internal energy of a system does not depend upon the

Question # 2

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

Question # 3

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 4

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

Question # 5

The value of E0in coulomb's law is:

Question # 6

A real gas can be approximated to an ideal gas at

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

Question # 11

The curve representing an isothermal process is called

Question # 12

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

Question # 13

Rate of diffusion is

Question # 14

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 15

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

Question # 16

The nature of thermal radiation is similar to:

Question # 17

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

Question # 18

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

Question # 19

Heat travels through vacuum by

Question # 20

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

Question # 21

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 22

The ideal gas law is

Question # 23

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 # 24

Which of the following is not an assumption of kinetic energy

Question # 25

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

Question # 26

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

Question # 27

If the formula PV = nRT, n denotes:

Question # 28

One mole of any substance contain

Question # 29

Gas constant per molecule is called:

Question # 30

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 When two objects are rubbed together, their internal energy
A. remains same
B. decreases
C. remains the same then decreases
D. increases
2 A reversible cycle is the one in which
A. some of the changes are reversible
B. all of the changes are reversible
C. all of the changes are irreversible
D. none of them
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 In the reverse process, the working substance passes through the same stages as in the direct process and
A. thermal effects at each stage are exactly reversed
B. mechanical effects at each stage are exactly reversed
C. thermal and mechanical effects at each stage remain the same
D. thermal and mechanical effects at each stage are exactly reversed
5 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
6 At absolute temperature, the kinetic energy of the molecules
A. Becomes zero
B. Becomes maximum
C. Becomes minimum
D. Remain constant
7 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
8 The process which is carried out at constant temperature is known as
A. adiabatic process
B. isothermal process
C. isochoric process
D. none of them
9 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
10 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K

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