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 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 # 2

A heat engine is that which converts

Question # 3

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

Question # 4

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 5

The process which is carried out at constant temperature is known as

Question # 6

Average KE of a gas molecule has:

Question # 7

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 8

The example of reversible process is

Question # 9

The efficiency of diesel engine is

Question # 10

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

Question # 11

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

Question # 12

We can express the work in term of

Question # 13

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

Question # 14

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

Question # 15

The percentage of available heat energy converted into work by a diesel engine is roughly

Question # 16

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

Question # 17

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

Question # 18

The pressure exerted by the gas is

Question # 19

The curve representing an adiabatic process is called

Question # 20

Absolute temperature can be calculated by

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The Boltzman constant has the value

Question # 29

The earliest heat engine was

Question # 30

The heat required to raise the temperature of one mole of the substance through 1 K is called

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 A reversible cycle is the one in which
A. some of the changes are reversible
B. all of the changes are reversible
C. all of the changes are irreversible
D. none of them
2 A process in which no heat enters or leaves the system is called
A. isochoric process
B. isothermal process
C. adiabatic process
D. none of them
3 When two objects come to common temperature, the body is said to be in:
A. Static equilibrium
B. Dynamic equilibrium
C. Thermal equilibrium
D. None of these
4 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
5 We cannot utilize the heat contents of oceans and atmosphere because
A. there is no reservoir at the same temperature
B. there is no reservoir at the temperature lower than any one of two
C. there is no reservoir at the temperature higher than any one of two
D. none of them
6 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
7 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
8 When heat is added into the system then change in entropy is
A. negative
B. positive
C. zero
D. any one of them
9 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
10 In the theory of dimensional analysis, heat may be properly represented by:
A. ML2T-2
B. MT-2
C. ML-1T-1
D. None of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!