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

A reversible cycle is the one in which

Question # 2

An isochoric process is one which take place at

Question # 3

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 4

The Boltzman constant has the value

Question # 5

Carnot heat engine only used

Question # 6

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

Question # 7

The behaviour of gases is well accounted by the kinetic theory based on

Question # 8

Melting point of ice

Question # 9

Brownian motion increases due to

Question # 10

Internal energy is the sum of all the forms of

Question # 11

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 # 12

The absolute temperature for an ideal gas is

Question # 13

At constant volume temperature is increased. Then

Question # 14

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

Question # 15

If an amount of heat enters the system it could

Question # 16

Maximum density of H2O is at the temperature

Question # 17

In the theory of dimensional analysis, heat may be properly represented by:

Question # 18

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 19

Truth of kinetic energy is confirmed by:

Question # 20

When heat is removed from the system

Question # 21

Rice takes longest to cook

Question # 22

When two objects are rubbed together, their internal energy

Question # 23

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

Question # 24

Which quantity is important in stating the entropy of the system

Question # 25

Electromagnetic waves emitted by hot bodies are called:

Question # 26

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 27

The example of irreversible process is

Question # 28

Energy gas behaves like an ideal gast at

Question # 29

At absolute temperature, the kinetic energy of the molecules

Question # 30

Absolute zero is considered as that temperature at which:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2
2 Electromagnetic waves emitted by hot bodies are called:
A. Photoelectrons
B. Alpha rays
C. Thermal radiation
D. None of these
3 A typical four stroke petrol engine undergoes how many successive processes in each cycle
A. one
B. two
C. three
D. four
4 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
5 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
6 Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is
A. 1 : 2
B. 2 : 3
C. 3 : 4
D. 8 : 9
7 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
8 On a cold morning a metal surface will fell colder to touch than a wooden surface, because
A. Metal has high specific heat
B. Metal has high thermal conductivity
C. Metal has low specific heat
D. Metal has low thermal conductivity
9 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
10 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them

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