ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

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ECAT Physics Chapter 11 Heat & Thermodynamics

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Question # 1

The concept of entropy was introduced into the study of thermodynamics in

Question # 2

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

Question # 3

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

Question # 4

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 5

In the formula P = N0KT, N0denotes:

Question # 6

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

Question # 7

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

Question # 8

Adiabatic change occurs when the gas

Question # 9

The percentage of available heat energy converted into work by a diesel engine is roughly

Question # 10

The ideal gas law is

Question # 11

The absolute temperature of the tripple point of water is

Question # 12

The curve representing an isothermal process is called

Question # 13

The behaviour of gases is well accounted by the kinetic theory based on

Question # 14

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

Question # 15

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

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ECAT Class Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The heat required to raise the temperature of one mole of the substance through 1 K is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. all of them
2 If the distance between two charges is doubled, the force between them will become:
A. Double
B. Half
C. Three times
D. One fourth
3 The second law of thermodynamics is concerned with the circumstances in which
A. heat can be converted into work
B. direction of flow of heat
C. none of them
D. both of them
4 While deriving the equation for pressure of a gas we consider the
A. rotational motion of molecules
B. vibrational motion of molecules
C. linear motion of molecules
D. all of them
5 The example of reversible process is
A. an explosion
B. changes occur suddenly
C. slow compression of a gas
D. all of them
6 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
7 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
8 A typical four stroke petrol engine undergoes how many successive processes in each cycle
A. one
B. two
C. three
D. four
9 On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves
A. outwards
B. inwards
C. in either way
D. none of these
10 Specific heat at constant pressure is greater than the specific heat at constant volume because
A. Heat is used up to increase temperature at constant pressure
B. Heat is used by gas for expansions purposes at constant pressure
C. Heat is use dup to increase internal energy
D. The above statement is invalid

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