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

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

Question # 2

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

Question # 3

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

Question # 4

The internal energy of a system does not depend upon the

Question # 5

A carnot cycle consists of

Question # 6

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

Question # 7

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

Question # 8

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

Question # 9

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

Question # 10

According to the second law, which is must to produce work

Question # 11

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

Question # 12

The example of reversible process is

Question # 13

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 # 14

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

Question # 15

In the formula P = N0KT, N0denotes:

Question # 16

The absolute temperature for an ideal gas is

Question # 17

Electromagnetic waves emitted by hot bodies are called:

Question # 18

No spark plug is needed in

Question # 19

When two objects are rubbed together, their internal energy

Question # 20

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

Question # 21

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 22

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

Question # 23

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

Question # 24

Generally a temperature scale is established by

Question # 25

Good absorbers of heat are

Question # 26

Which of the following does not have the same units:

Question # 27

The ideal gas law is

Question # 28

The bicycle pump provides a good example of

Question # 29

Energy gas behaves like an ideal gast at

Question # 30

Which of the following is a state variable

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 If the distance between two charges is doubled, the force between them will become:
A. Double
B. Half
C. Three times
D. One fourth
2 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
3 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them
4 On colliding in a closed container, the gas molecules
A. Transfer momentum to the walls
B. Momentum becomes zero
C. Move in opposite directions
D. Perform Brownian motion
5 At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be
A. 81 K
B. 355 K
C. 627 K
D. 627°C
6 No spark plug is needed in
A. petrol engine
B. diesel engine
C. both of them
D. none of them
7 A succession of events which bring the system back to its initial condition is called
A. reversible process
B. irreversible process
C. a cycle
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 On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands
A. adiabatically
B. isothermally
C. isochorically
D. isobarically
10 When the temperature of source and sink of a heat engine become equal entropy change will be
A. Zero
B. Max
C. Min
D. -ve

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!