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

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 2

For the working of a heat engine, there must be

Question # 3

Internal energy is the sum of all the forms of

Question # 4

The curve representing an adiabatic process is called

Question # 5

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

Question # 6

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

Question # 7

Sadi carnot described an ideal heat engine in

Question # 8

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

Question # 9

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

Question # 10

Which quantity is important in stating the entropy of the system

Question # 11

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

Question # 12

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

Question # 13

If an amount of heat enters the system it could

Question # 14

Absolute temperature can be calculated by

Question # 15

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

Question # 16

The absolute temperature of the tripple point of water is

Question # 17

Good absorbers of heat are

Question # 18

The absolute temperature for an ideal gas is

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

In all natural processes where heat flows from one system to another, there is always a net

Question # 25

Which of the following does not have the same units:

Question # 26

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

Question # 27

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

Question # 28

The example of irreversible process is

Question # 29

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

Question # 30

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

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 typical four stroke petrol engine undergoes how many successive processes in each cycle
A. one
B. two
C. three
D. four
2 First law of thermodynamic is special case of
A. Law of conservation of energy
B. Charle's law
C. Law of conservation of mass
D. Boyle's law
3 The disorder in the system increases due to the
A. removal of heat
B. addition of heat
C. removal or addition of heat
D. none of them
4 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
5 The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be
A. 2.0 x 10-5/°C
B. 4.0x10-5/°C
C. 6.0x10-5/°C
D. 2.33x10-5/°C
6 Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:
A. Newton's second law
B. Pascal's law
C. Carnot theorem
D. Second law of thermodynamics
7 Average KE of a gas molecule has:
A. Direct relation with absolute temperature and inverse relation with pressure
B. Direction relation with both absolute temperature and pressure
C. Inverse relation with both absolute temperature and pressure
D. None of these
8 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
9 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
10 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
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!