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

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

Question # 2

Brownian motion increases due to

Question # 3

The unit of thermodynamical scale is

Question # 4

Which of the following is not an example of adiabatic process

Question # 5

If the distance between two charges is doubled, the force between them will become:

Question # 6

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

Question # 7

A real gas can be approximated to an ideal gas at

Question # 8

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

Question # 9

One kilogram of different substances contain

Question # 10

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

Question # 11

Pressure of a gas at constant volume is proportion to

Question # 12

We cannot utilize the heat contents of oceans and atmosphere because

Question # 13

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 14

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 # 15

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

Question # 16

The ideal gas law is

Question # 17

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

Question # 18

When two objects are rubbed together, their internal energy

Question # 19

Which quantity is important in stating the entropy of the system

Question # 20

The efficiency of diesel engine is

Question # 21

A diatomic gas molecule has

Question # 22

Good absorbers of heat are

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 27

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

Question # 28

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

Question # 29

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 # 30

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

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 nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of these
2 The heat required to raise the temperature of one mole of the substance through 1 K is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. all of them
3 The percentage of available heat energy converted into work by a petrol engine is roughly
A. 35 %
B. 40 %
C. 35 to 40 %
D. 25 %
4 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
5 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
6 The internal energy of an ideal gas system is generally the
A. translational K.E of molecules
B. vibrational K.E of molecules
C. rotational K.E of molecules
D. all of them
7 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
8 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
9 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
10 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>

Test Questions

Is this page helpful?