ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

00:00
Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

The Boltzman constant has the value

Question # 5

At constant volume temperature is increased. Then

Question # 6

Energy gas behaves like an ideal gast at

Question # 7

In all natural processes where heat flows from one system to another, there is always a net

Question # 8

The nature of thermal radiation is similar to:

Question # 9

A process is a reversible process, if the entropy of the system

Question # 10

Absolute zero is considered as that temperature at which:

Question # 11

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

Question # 12

The efficiency of petrol engine is usually not more than 25% to 30% because of

Question # 13

During the whole carnot cycle

Question # 14

Which of the following is a state variable

Question # 15

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

Question # 16

Good absorbers of heat are

Question # 17

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

Question # 18

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 19

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 20

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 21

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

Question # 22

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

Question # 23

Sadi carnot described an ideal heat engine in

Question # 24

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

Question # 25

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

Question # 26

First law of thermodynamic is special case of

Question # 27

The ideal gas law is

Question # 28

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 29

The unit of thermodynamical scale is

Question # 30

Internal energy is the sum of all the forms of

Submit

Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQ`s Test

  • D
    Deuspeu 25 - Sep - 2024 02 Min 03 Sec 115/120
  • M
    M Umer Arain 19 - Nov - 2024 00 Min 11 Sec 105/120
  • D
    Dr Shahida 01 - Nov - 2024 11 Min 12 Sec 100/120
  • N
    Nitalaya Hassan 24 - Dec - 2024 04 Min 02 Sec 95/120
  • G
    Ghulam Murtaza 12 - Sep - 2024 20 Min 35 Sec 95/120
  • A
    Akshey Lohana 27 - Aug - 2024 14 Min 26 Sec 90/120
  • U
    Umair Rajput 09 - Sep - 2024 15 Min 22 Sec 85/120
  • I
    It's me Sm 26 - Aug - 2024 04 Min 12 Sec 80/120
  • S
    Sania Ahmed 16 - Dec - 2024 04 Min 58 Sec 75/120
  • K
    Kalsoom Memon 20 - Sep - 2024 06 Min 11 Sec 75/120
  • S
    Sanjna Uttwani 21 - Sep - 2024 05 Min 22 Sec 70/120
  • S
    Sudais Khan 12 - Jul - 2024 07 Min 45 Sec 70/120
  • A
    Aakash Rind 07 - Dec - 2024 06 Min 58 Sec 65/120
  • A
    Ali imtiaz 01 - Oct - 2024 07 Min 18 Sec 65/120
  • R
    Rashida Latif 13 - Jan - 2025 07 Min 37 Sec 65/120

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 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
3 In an adiabatic process the work is done at the expense of the
A. energy supplied to the system
B. energy gained from the surroundings
C. internal energy
D. none of them
4 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
5 The temperature scale approved in SI units is:
A. Celsius scale
B. Kelvin scale
C. Fehrenheit scale
D. None of these
6 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
7 Which of the following does not have the same units:
A. Work
B. Heat
C. Kinetic energy
D. Power
8 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
9 Pressure may be define as _______ per second per unit area:
A. Change in force
B. Change in momentum
C. Change in energy
D. Work done
10 A succession of events which bring the system back to its initial condition is called
A. reversible process
B. irreversible process
C. a cycle
D. none of them

Test Questions

Share your comments & questions here

  • No comments yet. Be the first to comment!

Is this page helpful?