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 ideal gas law is

Question # 2

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

Question # 3

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

Question # 4

A reversible cycle is the one in which

Question # 5

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

Question # 6

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

Question # 7

The absolute temperature for an ideal gas is

Question # 8

Maximum density of H2O is at the temperature

Question # 9

In the formula P = N0KT, N0denotes:

Question # 10

Energy gas behaves like an ideal gast at

Question # 11

Heat travels through vacuum by

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

A succession of events which bring the system back to its initial condition is called

Question # 16

If the formula PV = nRT, n denotes:

Question # 17

Absolute zero is considered as that temperature at which:

Question # 18

The number of translation degress of freedom for a diatomic gas is

Question # 19

Generally a temperature scale is established by

Question # 20

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

Question # 21

The temperature of gas is produced by

Question # 22

Adiabatic change occurs when the gas

Question # 23

The disorder in the system increases due to the

Question # 24

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

Question # 25

Rice takes longest to cook

Question # 26

The efficiency of diesel engine is

Question # 27

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

Question # 28

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 29

Which of the following is not an assumption of kinetic energy

Question # 30

When heat is removed from the system

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 efficiency of petrol engine is usually not more than 25% to 30% because of
A. friction
B. heat losses
C. both of them
D. none of them
2 At what temperature the adiabatic change is equivalent to the isothermal change?
A. Zero degree Celsius
B. Zero Kelvin
C. Critical temperature
D. Above critical temperature
3 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
4 If an amount of heat enters the system it could
A. decrease the internal energy
B. not change the internal energy
C. increase the internal energy
D. none of them
5 When two objects are rubbed together, their internal energy
A. remains same
B. decreases
C. remains the same then decreases
D. increases
6 In the formula P = N0KT, N0denotes:
A. Number of molecules per unit per volume
B. Number of moles
C. Number of molecules
D. None of these
7 On a cold morning a metal surface will fell colder to touch than a wooden surface, because
A. Metal has high specific heat
B. Metal has high thermal conductivity
C. Metal has low specific heat
D. Metal has low thermal conductivity
8 At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:
A. Double
B. Remains constant
C. Half
D. None of these
9 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
10 Average KE of a gas molecule has:
A. Direct relation with absolute temperature and inverse relation with pressure
B. Direction relation with both absolute temperature and pressure
C. Inverse relation with both absolute temperature and pressure
D. None of these

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!