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

No spark plug is needed in

Question # 2

For the working of a heat engine, there must be

Question # 3

If the formula PV = nRT, n denotes:

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

One kilogram of different substances contain

Question # 10

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Question # 11

The curve representing an isothermal process is called

Question # 12

In a heat engine, heat is supplied by the

Question # 13

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

Question # 14

Generally a temperature scale is established by

Question # 15

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

Question # 16

Truth of kinetic energy is confirmed by:

Question # 17

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

Question # 18

At O° K which of the following properties of a gas will be zero?

Question # 19

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

Question # 20

Melting point of ice

Question # 21

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 22

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

Question # 23

The disorder in the system increases due to the

Question # 24

In case of an ideal gas, the P.E associated with its molecule is

Question # 25

Adiabatic change occurs when the gas

Question # 26

Absolute temperature can be calculated by

Question # 27

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

Question # 28

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

Question # 29

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 30

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

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 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
A. 0°C
B. 10°C
C. 17°C
D. 20°C
2 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
3 Generally a temperature scale is established by
A. one fixed point
B. two fixed point
C. three fixed point
D. four fixed point
4 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K
5 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
6 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
A. Clausius statement of second law
B. Kelvin'sstatement of second law
C. Clausius statement of first law
D. Kelvin's statement of first law
7 The efficiency of diesel engine is
A. 25%
B. 25 - 30%
C. 35%
D. 35 - 40%
8 In all natural processes where heat flows from one system to another, there is always a net
A. decrease in entropy
B. increase in entropy
C. decrease or increase in entropy
D. none of them
9 At O° K which of the following properties of a gas will be zero?
A. Kinetic energy
B. Potential energy
C. Vibrational energy
D. Density
10 The efficiency of petrol engine is usually not more than 25% to 30% because of
A. friction
B. heat losses
C. both of them
D. none of them

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!