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 is not thermo dynamical function?

Question # 2

The temperature scale approved in SI units is:

Question # 3

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

Question # 4

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

Question # 5

On colliding in a closed container, the gas molecules

Question # 6

The efficiency of diesel engine is

Question # 7

Which of the following is not an assumption of kinetic energy

Question # 8

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

Question # 9

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

Question # 10

The value of E0in coulomb's law is:

Question # 11

The unit of thermodynamical scale is

Question # 12

Rate of diffusion is

Question # 13

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Question # 14

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

Question # 15

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The internal energy of an ideal gas system is generally the

Question # 20

We can express the work in term of

Question # 21

Which of the following does not have the same units:

Question # 22

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 23

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

Question # 24

The volume of universal gas constant R is:

Question # 25

The absolute temperature of the tripple point of water is

Question # 26

The earliest heat engine was

Question # 27

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

Question # 28

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

Question # 29

The nature of thermal radiation is similar to:

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Since the absolute scale is independent of the property of the working substance, hence, can be applied at
A. very high temperature
B. very low temperature
C. any one of them
D. none of them
2 A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
A. 1/2
B. More than 1/2
C. Less than 1/2
D. Between 1 and 2
3 If a process cannot be retraced in the backward direction by reversing the controlling factors, it is
A. a reversible process
B. an irreversible process
C. any one of them
D. both of them
4 Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:
A. N = nNAm = MNA
B. n = N NA, M = mNA
C. M = NA/N , NA= m/n
D. N = nNA, M = mNA
5 Maximum density of H2O is at the temperature
A. 32°F
B. 39.2°F
C. 42°F
D. 4°F
6 On colliding in a closed container, the gas molecules
A. Transfer momentum to the walls
B. Momentum becomes zero
C. Move in opposite directions
D. Perform Brownian motion
7 A carnot cycle consists of
A. One step
B. two step
C. three steps
D. four steps
8 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
9 When two objects are rubbed together, their internal energy
A. remains same
B. decreases
C. remains the same then decreases
D. increases
10 Melting point of ice
A. Increases with increasing pressure
B. Decreases with increasing pressure
C. Is independent of pressure
D. Is proportional to pressure

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