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

First law of thermodynamic is special case of

Question # 2

In all natural processes where heat flows from one system to another, there is always a net

Question # 3

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 4

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 # 5

According to kinetic theory of gases, molecules of a gas behave like

Question # 6

In the formula P = N0KT, N0denotes:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Hotness and coldness of an object is represented in terms:

Question # 11

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

Question # 12

The pressure exerted by the gas is

Question # 13

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

Question # 14

Boyle's law is applicable in

Question # 15

The efficiency of diesel engine is

Question # 16

Adiabatic change occurs when the gas

Question # 17

On colliding in a closed container, the gas molecules

Question # 18

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 19

When the temperature of source and sink of a heat engine become equal entropy change will be

Question # 20

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

Question # 21

Internal energy is the sum of all the forms of

Question # 22

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 # 23

Average KE of a gas molecule has:

Question # 24

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

Question # 25

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

Question # 26

Which quantity is important in stating the entropy of the system

Question # 27

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

Question # 28

The absolute temperature for an ideal gas is

Question # 29

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

Question # 30

The bicycle pump provides a good example of

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 The internal energy of a system does not depend upon the
A. initial state of the system
B. final state of the system
C. path
D. none of them
3 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
4 The temperature scale approved in SI units is:
A. Celsius scale
B. Kelvin scale
C. Fehrenheit scale
D. None of these
5 The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is
A. 70%
B. 100%
C. 35%
D. 38%
6 Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is
A. 1 : 2
B. 2 : 3
C. 3 : 4
D. 8 : 9
7 For making cooking utensils, which of the following pairs of properties is most suited?
A. Low specific heat and high conductivity
B. Low specific heat and low conductivity
C. High specific heat and high conductivity
D. High specific heat and low conductivity
8 Absolute temperature can be calculated by
A. Means squares velocity
B. Motion of the molecule
C. Both A and B
D. None of these
9 No spark plug is needed in
A. petrol engine
B. diesel engine
C. both of them
D. none of them
10 When two objects come to common temperature, the body is said to be in:
A. Static equilibrium
B. Dynamic equilibrium
C. Thermal equilibrium
D. None of these

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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