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

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

Question # 2

In an adiabatic expansion, the temperature of the gas

Question # 3

The curve representing an adiabatic process is called

Question # 4

Good absorbers of heat are

Question # 5

The internal energy of an ideal gas system is generally the

Question # 6

On colliding in a closed container, the gas molecules

Question # 7

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

Question # 8

While deriving equation of pressure by kinetic theory of gases, we take into account:

Question # 9

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

Question # 10

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

Question # 11

In a heat engine, heat is supplied by the

Question # 12

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

Question # 13

When two objects are rubbed together, their internal energy

Question # 14

A heat engine is that which converts

Question # 15

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

Question # 16

Heat travels through vacuum by

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

For the working of a heat engine, there must be

Question # 19

The nature of thermal radiation is similar to:

Question # 20

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 # 21

At constant volume temperature is increased. Then

Question # 22

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 # 23

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 24

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 25

Adiabatic change occurs when the gas

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

Energy gas behaves like an ideal gast at

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 The work done by the system on its environment is considered as
A. positive
B. negative
C. zero
D. any one of them
3 Which of the following is not thermo dynamical function?
A. Enthalpy
B. Work done
C. Gibb's energy
D. Internal energy
4 The Boltzman constant has the value
A. 1.38 x 10-23JK-1
B. 1.28 x 10-23JK-1
C. 1.38 x 10-26JK-1
D. 1.28 x 10-26JK-1
5 Adiabatic change occurs when the gas
A. expands
B. compressed
C. expands or compressed
D. expands or compressed rapidly
6 The volume of universal gas constant R is:
A. 8.314 J/K mole K
B. 8314 J/K mole K
C. 8.314 J/mole K
D. None of these
7 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
8 An isochoric process is one which take place at
A. Constant internal energy
B. Constant entropy
C. Constant volume
D. Constant pressure
9 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
10 Real gases strictly obey gas law at:
A. High pressure and low temperatures
B. Low pressures and high temperatures
C. High pressures and high temperatures
D. None of these

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