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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

00:00
Question # 1

The number of translation degress of freedom for a diatomic gas is

Question # 2

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

Question # 3

The rate of change of momentum of a molecule is equal to:

Question # 4

Which of the following is a state variable

Question # 5

When two objects are rubbed together, their internal energy

Question # 6

The nature of thermal radiation is similar to:

Question # 7

Rice takes longest to cook

Question # 8

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

Question # 9

Energy gas behaves like an ideal gast at

Question # 10

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

Question # 11

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

Question # 12

One mole of any substance contain

Question # 13

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Question # 14

We can express the work in term of

Question # 15

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

Question # 16

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

Question # 17

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

Question # 18

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

Question # 19

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 20

We cannot utilize the heat contents of oceans and atmosphere because

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

In an adiabatic process the work is done at the expense of the

Question # 25

Heat travels through vacuum by

Question # 26

Electromagnetic waves emitted by hot bodies are called:

Question # 27

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 # 28

When heat is removed from the system

Question # 29

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 30

Adiabatic change occurs when the gas

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics MCQ`s Test

  • M
    Malik Farhan 26 - Jan - 2019 08 Min 09 Sec 80/120
  • I
    Israr Ahmed 09 - Mar - 2024 17 Min 46 Sec 60/120
  • W
    Waleed Ahmed 24 - Feb - 2023 05 Min 43 Sec 50/120
  • M
    Maliha afridi 25 - Oct - 2018 11 Min 47 Sec 50/120
  • G
    Gimi tunio 30 - Jun - 2018 26 Min 00 Sec 45/120
  • M
    Malik Farhan 23 - May - 2021 07 Min 14 Sec 35/120
  • F
    Farhan Sial 30 - Aug - 2018 09 Min 36 Sec 30/120
  • A
    Ahmed Ali Shah 07 - Nov - 2023 01 Min 01 Sec 25/120
  • K
    kamal deep 17 - Jun - 2023 02 Min 55 Sec 20/120
  • H
    hamza abid 27 - Jan - 2022 10 Min 50 Sec 20/120
  • M
    Mohsin rajput Rajput 21 - Sep - 2025 06 Min 38 Sec 9/30
  • F
    Frankie 09 - Sep - 2022 01 Min 29 Sec 0/120

ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1
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
2 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
3 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
4 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
5 In an adiabatic process the work is done at the expense of the
A. energy supplied to the system
B. energy gained from the surroundings
C. internal energy
D. none of them
6 A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called
A. reversible process
B. irreversible process
C. any one of them
D. none of them
7 A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
A. 1/2
B. More than 1/2
C. Less than 1/2
D. Between 1 and 2
8 At constant volume temperature is increased. Then
A. Collision on walls will be less
B. Number of collisions per unit time will increase
C. Collision will be in straight lines
D. Collision will not change
9 Rice takes longest to cook
A. In a submarine 100 m below the surface of the sea
B. At sea level
C. At Murree
D. At Mount Everest
10 Absolute temperature can be calculated by
A. Means squares velocity
B. Motion of the molecule
C. Both A and B
D. None of these

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!