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

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

Question # 2

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

Question # 3

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

Question # 4

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 5

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Question # 6

In the formula P = N0KT, N0denotes:

Question # 7

At constant volume temperature is increased. Then

Question # 8

When heat is added into the system then change in entropy is

Question # 9

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

Question # 10

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

Question # 11

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Question # 12

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 13

While deriving the equation for pressure of a gas we consider the

Question # 14

When two objects are rubbed together, their internal energy

Question # 15

If the formula PV = nRT, n denotes:

Question # 16

Rice takes longest to cook

Question # 17

Heat travels through vacuum by

Question # 18

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

Question # 19

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 # 20

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

Question # 21

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 # 22

No spark plug is needed in

Question # 23

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

Question # 24

The absolute temperature for an ideal gas is

Question # 25

The efficiency of diesel engine is

Question # 26

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

Question # 27

Which of the following is not thermo dynamical function?

Question # 28

Good absorbers of heat are

Question # 29

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

Question # 30

Average KE of a gas molecule has:

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 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
A. P=P/V<1/2mv2>
B. P=2N/V<1/2mv2>
C. P=2/3N/V<1/2mv2>
D. P=2/3N/V<mv2>
2 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
3 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly
4 The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is
A. 70%
B. 100%
C. 35%
D. 38%
5 If the volume of the gas is to be increased by 4 times, then
A. Temperature and pressure must be doubled
B. At constant P the temperature must be increased by 4 times
C. At constant T the pressure must be increased by four times
D. It cannot be increased
6 An irreversible heat flow from a hot to cold substances of a system, causes the disorder to
A. decrease
B. remains the same
C. increase
D. any one of them
7 In thermodynamics, internal energy is the function of
A. temperature
B. pressure
C. state
D. none of them
8 In the reverse process, the working substance passes through the same stages as in the direct process and
A. thermal effects at each stage are exactly reversed
B. mechanical effects at each stage are exactly reversed
C. thermal and mechanical effects at each stage remain the same
D. thermal and mechanical effects at each stage are exactly reversed
9 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
10 Pressure of a gas at constant volume is proportion to
A. Total energy of gas
B. Average P.E to molecules
C. Average K.E of molecules
D. Total internal energy of gas

Test Questions

Is this page helpful?