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

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

Question # 2

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

Question # 3

Which of the following is not an example of adiabatic process

Question # 4

Which of the following is a state variable

Question # 5

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

Question # 6

First law of thermodynamic is special case of

Question # 7

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

Question # 8

Melting point of ice

Question # 9

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

Question # 10

An isochoric process is one which take place at

Question # 11

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 12

Average KE of a gas molecule has:

Question # 13

Brownian motion increases due to

Question # 14

A succession of events which bring the system back to its initial condition is called

Question # 15

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 # 16

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

Question # 17

Which of the following is not thermo dynamical function?

Question # 18

The Boltzman constant has the value

Question # 19

Energy gas behaves like an ideal gast at

Question # 20

Absolute temperature can be calculated by

Question # 21

Heat travels through vacuum by

Question # 22

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

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

Efficiency of carnot engine is independent of the

Question # 25

Boyle's law is applicable in

Question # 26

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

Question # 27

For the working of a heat engine, there must be

Question # 28

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

Question # 29

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 30

Pressure may be define as _______ per second per unit area:

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 Absolute temperature can be calculated by
A. Means squares velocity
B. Motion of the molecule
C. Both A and B
D. None of these
2 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
3 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K
4 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
5 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
6 At constant temperature, if the density of the gas is increased, its pressure will:
A. One kg of a substance
B. Unit volume of a substance
C. One mole of a substance
D. None of these
7 The nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of these
8 Carnot heat engine only used
A. isothermal processes
B. adiabatic processes
C. both of them
D. none of them
9 When heat is added into the system then change in entropy is
A. negative
B. positive
C. zero
D. any one of them
10 The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at
A. 100 K
B. 273 K
C. 0 K
D. -273 K

Test Questions

Is this page helpful?