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

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Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

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Question # 1

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 2

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

Question # 3

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

Question # 4

The curve representing an isothermal process is called

Question # 5

In the theory of dimensional analysis, heat may be properly represented by:

Question # 6

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 7

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

Question # 8

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

Question # 9

The curve representing an adiabatic process is called

Question # 10

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 # 11

The absolute temperature for an ideal gas is

Question # 12

Average KE of a gas molecule has:

Question # 13

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

Question # 14

No spark plug is needed in

Question # 15

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

Question # 16

Generally a temperature scale is established by

Question # 17

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

Question # 18

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

Question # 19

A diatomic gas molecule has

Question # 20

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

Question # 21

One mole of any substance contain

Question # 22

In thermodynamics, internal energy is the function of

Question # 23

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

Question # 24

Adiabatic change occurs when the gas

Question # 25

A reversible cycle is the one in which

Question # 26

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

Question # 27

Efficiency of carnot engine is independent of the

Question # 28

An isochoric process is one which take place at

Question # 29

While deriving the equation for pressure of a gas we consider the

Question # 30

The temperature of gas is produced by

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
2 A typical four stroke petrol engine undergoes how many successive processes in each cycle
A. one
B. two
C. three
D. four
3 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
4 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
5 The absolute temperature for an ideal gas is
A. directly proportional to the rotational K.E of gas molecules
B. directly proportional to the vibrational K.E of gas molecules
C. directly proportional to the average translational K.E.of gas molecules
D. directly proportional to the P.E. of gas molecules
6 At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be
A. 81 K
B. 355 K
C. 627 K
D. 627°C
7 Amount of heat required to raise the temperature of a body through 1 K is called its
A. Specific heat
B. Water equivalent
C. Thermal capacity
D. Entropy
8 On colliding in a closed container, the gas molecules
A. Transfer momentum to the walls
B. Momentum becomes zero
C. Move in opposite directions
D. Perform Brownian motion
9 The bicycle pump provides a good example of
A. first law of thermodynamics
B. second law of thermodynamics
C. third law of thermodynamics
D. none of them
10 A reversible cycle is the one in which
A. some of the changes are reversible
B. all of the changes are reversible
C. all of the changes are irreversible
D. none of them

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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