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

Question # 2

Pressure exerted by a gas is

Question # 3

The disorder in the system increases due to the

Question # 4

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 5

Which quantity is important in stating the entropy of the system

Question # 6

Hotness and coldness of an object is represented in terms:

Question # 7

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

Question # 8

Which of the following is not an example of adiabatic process

Question # 9

According to kinetic theory of gases, molecules of a gas behave like

Question # 10

In the theory of dimensional analysis, heat may be properly represented by:

Question # 11

A diatomic gas molecule has

Question # 12

Heat travels through vacuum by

Question # 13

In thermodynamics, internal energy is the function of

Question # 14

Good absorbers of heat are

Question # 15

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 16

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 17

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Question # 18

The temperature of gas is produced by

Question # 19

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

Question # 20

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

Question # 21

Energy gas behaves like an ideal gast at

Question # 22

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

Question # 23

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

Question # 24

A carnot cycle consists of

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Brownian motion increases due to

Question # 29

The nature of thermal radiation is similar to:

Question # 30

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

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 Amount of heat required to raise the temperature of a body through 1 K is called its
A. Specific heat
B. Water equivalent
C. Thermal capacity
D. Entropy
2 The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to
A. 300°C
B. 573°C
C. 600°C
D. 743°C
3 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
4 Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is
A. 1 : 2
B. 2 : 3
C. 3 : 4
D. 8 : 9
5 A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called
A. reversible process
B. irreversible process
C. any one of them
D. none of them
6 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
7 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT
8 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
A. 0 J
B. 2 J
C. 5 J
D. 10 J
9 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
10 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

Test Questions

Is this page helpful?