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 an assumption of kinetic energy

Question # 2

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 3

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

Question # 4

Generally a temperature scale is established by

Question # 5

The example of irreversible process is

Question # 6

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

Question # 7

Which of the following is not thermo dynamical function?

Question # 8

Pressure of a gas at constant volume is proportion to

Question # 9

The value of E0in coulomb's law is:

Question # 10

Which quantity is important in stating the entropy of the system

Question # 11

Truth of kinetic energy is confirmed by:

Question # 12

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

Question # 13

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

Question # 14

The ideal gas law is

Question # 15

The second law of thermodynamics is concerned with the circumstances in which

Question # 16

Average KE of a gas molecule has:

Question # 17

Carnot heat engine only used

Question # 18

During the whole carnot cycle

Question # 19

The temperature scale approved in SI units is:

Question # 20

The curve representing an isothermal process is called

Question # 21

The volume of universal gas constant R is:

Question # 22

Boyle's law is applicable in

Question # 23

In an adiabatic expansion, the temperature of the gas

Question # 24

For the working of a heat engine, there must be

Question # 25

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

Question # 26

A real gas can be approximated to an ideal gas at

Question # 27

Brownian motion increases due to

Question # 28

The efficiency of petrol engine is usually not more than 25% to 30% because of

Question # 29

We can express the work in term of

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Generally a temperature scale is established by using certain physical properties of a material which varies
A. nonlinearly with temperature
B. linearly with temperature
C. either of them
D. none of them
2 The temperature of gas is produced by
A. At potential energy of its molecules
B. The kinetic energy of its molecules
C. The attractive force between its molecules
D. The repulsive force between its molecules
3 In which process the condition for the application of Boyle's law on the gas is fulfilled
A. isochoric process
B. adiabatic process
C. isothermal process
D. none of them
4 If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is
A. 2 : 1
B. 4 : 1
C. 1 : 4
D. 3 : 4
5 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
6 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
7 Maximum density of H2O is at the temperature
A. 32°F
B. 39.2°F
C. 42°F
D. 4°F
8 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
9 When two objects are rubbed together, their internal energy
A. remains same
B. decreases
C. remains the same then decreases
D. increases
10 The bicycle pump provides a good example of
A. first law of thermodynamics
B. second law of thermodynamics
C. third law of thermodynamics
D. none of them

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