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

In thermodynamics, internal energy is the function of

Question # 2

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Question # 3

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

Question # 4

The basis to define a temperature scale that is independent of material properties is provided by

Question # 5

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

Question # 6

Efficiency of carnot engine is independent of the

Question # 7

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

Question # 8

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 # 9

Rice takes longest to cook

Question # 10

A process in which no heat enters or leaves the system is called

Question # 11

If an amount of heat enters the system it could

Question # 12

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

Question # 13

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 14

In an adiabatic expansion, the temperature of the gas

Question # 15

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

Question # 16

The absolute temperature of the tripple point of water is

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

Electromagnetic waves emitted by hot bodies are called:

Question # 19

A reversible cycle is the one in which

Question # 20

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

Question # 21

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

Question # 22

The example of reversible process is

Question # 23

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

Question # 24

Which of the following is not thermo dynamical function?

Question # 25

Absolute temperature can be calculated by

Question # 26

At absolute temperature, the kinetic energy of the molecules

Question # 27

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Question # 28

The earliest heat engine was

Question # 29

The temperature of gas is produced by

Question # 30

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

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
  • A
    Abdullah Qaisar 10 - Jun - 2026 07 Min 15 Sec 76/120
  • 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
  • T
    Tayyba Khalid 10 - May - 2026 05 Min 41 Sec 68/120
  • A
    Aakash Rind 07 - Dec - 2024 06 Min 58 Sec 65/120
  • A
    Ali imtiaz 01 - Oct - 2024 07 Min 18 Sec 65/120

ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
2 The Boltzman constant has the value
A. 1.38 x 10-23JK-1
B. 1.28 x 10-23JK-1
C. 1.38 x 10-26JK-1
D. 1.28 x 10-26JK-1
3 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
4 In a heat engine, heat is supplied by the
A. cold reservoir
B. sink
C. hot reservoir
D. none of them
5 Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:
A. N = nNAm = MNA
B. n = N NA, M = mNA
C. M = NA/N , NA= m/n
D. N = nNA, M = mNA
6 Rice takes longest to cook
A. In a submarine 100 m below the surface of the sea
B. At sea level
C. At Murree
D. At Mount Everest
7 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
8 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
9 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them
10 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them

Test Questions