Question # 1

No spark plug is needed in the

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Petrol engine

Diesel engine

Gas engine

Water engine

The molecules of an ideal gas exert

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Force on each other

No force on each other

Large force on each other

Pressure on each other

If the temperature of sink is absolute zero then the efficiency of heat engine engine should be.

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100%

50%

Infinite

zero

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

Which is the process in which temperature of the system remains constant.

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Adiabatic process

Isochoric process

Isothermal process

Isobaric process

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

Pascal is the unit of

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Pressure

Force

Tension

Weight

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

The number of spark plug needed in diesel engine is

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0

2

3

4

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

Not change in entropy of a system after one complete Carnot cycle is.

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Positive

Negative

Zero

None of these

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

The efficiency of any heat engine can never be

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+ve

100%

-ve

None of these

A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.

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100%

70%

60%

50%

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

A device based upon the thermodynamics property of matter is called.

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Calorimeter

Heat engine

thermometer

Voltmeter

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

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Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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