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 example of adiabatic process

Question # 2

Rice takes longest to cook

Question # 3

Which of the following does not have the same units:

Question # 4

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

Question # 5

When two objects come to common temperature, the body is said to be in:

Question # 6

During the whole carnot cycle

Question # 7

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 # 8

Real gases strictly obey gas law at:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Carnot heat engine only used

Question # 13

Energy gas behaves like an ideal gast at

Question # 14

We cannot utilize the heat contents of oceans and atmosphere because

Question # 15

Maximum density of H2O is at the temperature

Question # 16

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 17

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 18

The product of the pressure and volume of an ideal gas is

Question # 19

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

Question # 20

A carnot cycle consists of

Question # 21

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

Question # 22

The Boltzman constant has the value

Question # 23

In thermodynamics, internal energy is the function of

Question # 24

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 25

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

Question # 26

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

Question # 27

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 28

Boyle's law is applicable in

Question # 29

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

Question # 30

At constant temperature, if the density of the gas is increased, its pressure will:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Generally a temperature scale is established by
A. one fixed point
B. two fixed point
C. three fixed point
D. four fixed point
2 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
3
During the whole carnot cycle
A. Thermal equilibrium is maintained
B. mechanical equilibrium is maintained
C. both the thermal and mechanical equilibriumis maintained
D. both the thermal and mechanical equilibrium is not maintained
4 Rate of diffusion is
A. Faster in solids than in liquids and gases
B. Faster in liquids than in solids and gases
C. Equal to solids, liquids and gases
D. Faster in gases than in liquids and solids
5 A heat engine is that which converts
A. mechanical energy into thermal energy
B. thermal energy into mechanical energy
C. K.E into potential energy
D. heat energy into light energy
6 Absolute temperature can be calculated by
A. Means squares velocity
B. Motion of the molecule
C. Both A and B
D. None of these
7 Which of the following is a state variable
A. entropy
B. pressure
C. volume
D. all of them
8 If the volume of the gas is to be increased by 4 times, then
A. Temperature and pressure must be doubled
B. At constant P the temperature must be increased by 4 times
C. At constant T the pressure must be increased by four times
D. It cannot be increased
9 Pressure may be define as _______ per second per unit area:
A. Change in force
B. Change in momentum
C. Change in energy
D. Work done
10 The behaviour of gases is well accounted by the kinetic theory based on
A. microscopic approach
B. macroscopic approach
C. both of them
D. none of them

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