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

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 2

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

Question # 3

Heat travels through vacuum by

Question # 4

Which of the following is a state variable

Question # 5

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 6

The example of reversible process is

Question # 7

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

Question # 8

The rate of change of momentum of a molecule is equal to:

Question # 9

The state in which ice, water and vapour coexists in equilibrium is called

Question # 10

If the formula PV = nRT, n denotes:

Question # 11

One kilogram of different substances contain

Question # 12

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Question # 13

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 14

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

Question # 15

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

Question # 16

When heat is removed from the system

Question # 17

Hotness and coldness of an object is represented in terms:

Question # 18

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

Question # 19

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

Question # 20

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 21

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

Question # 22

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

Question # 23

In thermodynamics, internal energy is the function of

Question # 24

Which of the following is not thermo dynamical function?

Question # 25

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

Question # 26

Pressure exerted by a gas is

Question # 27

At absolute temperature, the kinetic energy of the molecules

Question # 28

If an amount of heat enters the system it could

Question # 29

The absolute temperature for an ideal gas is

Question # 30

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

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 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
2 Pressure exerted by a gas is
A. Independent of density of the gas
B. Inversely proportional to the density of the gas
C. Directly proportional to the square of the density of the gas
D. Directly proportional to the density of the gas
3 Which of the following is a state variable
A. entropy
B. pressure
C. volume
D. all of them
4 A real gas can be approximated to an ideal gas at
A. Low density
B. High pressure
C. High density
D. Low temperature
5 Generally a temperature scale is established by using certain physical properties of a material which varies
A. nonlinearly with temperature
B. linearly with temperature
C. either of them
D. none of them
6 In case of an ideal gas, the P.E associated with its molecule is
A. maximum
B. zero
C. minimum
D. not fixed
7 The volume of universal gas constant R is:
A. 8.314 J/K mole K
B. 8314 J/K mole K
C. 8.314 J/mole K
D. None of these
8 According to kinetic theory of gases, molecules of a gas behave like
A. Inelastic spheres
B. Perfectly elastic rigid sphere
C. Perfectly elastic non-rigid spheres
D. Inelastic non-rigid spheres
9 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
10 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

Test Questions

Is this page helpful?