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

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

Question # 2

The efficiency of diesel engine is

Question # 3

A heat engine is that which converts

Question # 4

The product of the pressure and volume of an ideal gas is

Question # 5

The example of irreversible process is

Question # 6

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

Question # 7

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

Question # 8

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Question # 9

The curve representing an adiabatic process is called

Question # 10

A process in which no heat enters or leaves the system is called

Question # 11

If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:

Question # 12

A carnot cycle consists of

Question # 13

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Question # 14

Which of the following does not have the same units:

Question # 15

The relationship between Boltzmann constant k with R and NAis given as:

Question # 16

Adiabatic change occurs when the gas

Question # 17

The only significant motion possessed by the mono-atomic gas represented is:

Question # 18

First law of thermodynamics is consequence of conservation of

Question # 19

One mole of any substance contain

Question # 20

Which of the following is not thermo dynamical function?

Question # 21

Electromagnetic waves emitted by hot bodies are called:

Question # 22

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

Question # 23

At constant volume temperature is increased. Then

Question # 24

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 25

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

Question # 26

Pressure exerted by a gas is

Question # 27

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

Question # 28

The pressure exerted by the gas is

Question # 29

The example of reversible process is

Question # 30

Real gases strictly obey gas law at:

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 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
2 In the study of thermodynamics, which gas is considered as the working substance
A. real gas
B. ideal gas
C. any gas may be ideal or real
D. none of them
3 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
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 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
6 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
7 If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of
A. second law thermodynamics
B. first law of thermodynamics
C. third law of thermodynamics
D. none of them
8 First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about
A. how heat is absorbed
B. how heat extracted
C. how this conversion takes place
D. none of them
9 The work done by the system on its environment is considered as
A. positive
B. negative
C. zero
D. any one of them
10 Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be
A. R/2
B. P
C. 2P
D. Depending on the relative mass of the gases

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!