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

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

Question # 2

Sadi carnot described an ideal heat engine in

Question # 3

Absolute zero is considered as that temperature at which:

Question # 4

One kilogram of different substances contain

Question # 5

Which of the following does not have the same units:

Question # 6

Amount of heat required to raise the temperature of a body through 1 K is called its

Question # 7

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

Question # 8

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

Question # 9

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Question # 10

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

Question # 11

In thermodynamics, internal energy is the function of

Question # 12

An isochoric process is one which take place at

Question # 13

Hotness and coldness of an object is represented in terms:

Question # 14

Rate of diffusion is

Question # 15

Which of the following is a state variable

Question # 16

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

Question # 17

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

Question # 18

At constant volume temperature is increased. Then

Question # 19

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

Question # 20

Heat travels through vacuum by

Question # 21

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 22

The efficiency of diesel engine is

Question # 23

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 24

The temperature scale approved in SI units is:

Question # 25

The relationship between Boltzmann constant k with R and NAis given as:

Question # 26

The unit of thermodynamical scale is

Question # 27

First law of thermodynamics is consequence of conservation of

Question # 28

The example of reversible process is

Question # 29

The bicycle pump provides a good example of

Question # 30

According to kinetic theory of gases, molecules of a gas behave like

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Heat travels through vacuum by
A. Conduction
B. Convection
C. Radiation
D. Both A and B
2 The nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of these
3 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
4 While deriving equation of pressure by kinetic theory of gases, we take into account:
A. Only linear motion of molecules
B. Only rotational motion
C. Only vibratory motion
D. All of these
5 The work done by the system on its environment is considered as
A. positive
B. negative
C. zero
D. any one of them
6 If a liquid is heated in weightlessness, the heat is transmitted through
A. Conduction
B. Convection
C. Radiation
D. Neither, because the liquid cannot be heated in weightlessness
7 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
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 The only significant motion possessed by the mono-atomic gas represented is:
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
10 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them

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