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

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

Question # 2

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

Question # 3

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 4

In an adiabatic expansion, the temperature of the gas

Question # 5

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

Question # 6

One kilogram of different substances contain

Question # 7

Triple point of water is

Question # 8

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

Question # 9

During the whole carnot cycle

Question # 10

At absolute temperature, the kinetic energy of the molecules

Question # 11

Adiabatic change occurs when the gas

Question # 12

In a heat engine, heat is supplied by the

Question # 13

On colliding in a closed container, the gas molecules

Question # 14

Which of the following is not an assumption of kinetic energy

Question # 15

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

Question # 16

The unit of thermodynamical scale is

Question # 17

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

Question # 18

Brownian motion increases due to

Question # 19

At constant temperature, if the density of the gas is increased, its pressure will:

Question # 20

Carnot heat engine only used

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

Maximum density of H2O is at the temperature

Question # 23

The efficiency of diesel engine is

Question # 24

For the working of a heat engine, there must be

Question # 25

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

Question # 26

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

Question # 27

In the formula P = N0KT, N0denotes:

Question # 28

In an ideal gas, the molecules have:

Question # 29

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

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 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 process which is carried out at constant temperature is known as
A. adiabatic process
B. isothermal process
C. isochoric process
D. none of them
2 A carnot cycle consists of
A. One step
B. two step
C. three steps
D. four steps
3 If water in a closed bottle is taken up to the moon and opened, the water gets
A. Freeze
B. Boiled
C. Dissociated into O2and H2
D. Evaporated
4 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
5 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
6 The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at
A. 100 K
B. 273 K
C. 0 K
D. -273 K
7 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
8 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them
9
During the whole carnot cycle
A. Thermal equilibrium is maintained
B. mechanical equilibrium is maintained
C. both the thermal and mechanical equilibriumis maintained
D. both the thermal and mechanical equilibrium is not maintained
10 Hotness and coldness of an object is represented in terms:
A. Heat
B. Temperature
C. Chemical energy
D. None of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest
  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

    Like
    Reply