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

00:00
Question # 1

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 2

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 3

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 4

Boyle's law is applicable in

Question # 5

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

Question # 6

During the whole carnot cycle

Question # 7

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 8

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

Question # 9

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 10

One kilogram of different substances contain

Question # 11

Absolute zero is considered as that temperature at which:

Question # 12

A diatomic gas molecule has

Question # 13

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 14

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

Question # 15

Melting point of ice

Question # 16

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

Question # 17

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

Question # 18

Pressure exerted by a gas is

Question # 19

When heat is removed from the system

Question # 20

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

Question # 21

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

Question # 22

In a heat engine, heat is supplied by the

Question # 23

Which of the following does not have the same units:

Question # 24

The Boltzman constant has the value

Question # 25

The earliest heat engine was

Question # 26

The efficiency of diesel engine is

Question # 27

If the distance between two charges is doubled, the force between them will become:

Question # 28

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

Question # 29

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 Good absorbers of heat are
A. Poor emitters
B. Non emitters
C. Good emitters
D. Highly polarized
3 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
4 If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy
A. 0 J
B. 2 J
C. 5 J
D. 10 J
5 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
6 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
7 In a heat engine, heat is supplied by the
A. cold reservoir
B. sink
C. hot reservoir
D. none of them
8 If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is
A. 2 : 1
B. 4 : 1
C. 1 : 4
D. 3 : 4
9 On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands
A. adiabatically
B. isothermally
C. isochorically
D. isobarically
10 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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