Question # 1

the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

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

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100%

70%

60%

50%

The number of spark plug needed in diesel engine is

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0

2

3

4

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

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Positive

Negative

Zero

None of these

If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.

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Constant

Zero

Increase

Decrease

The ideal gas law is.

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PV =NVk

P = NkT

PV =nRT

P=nRT

Unite of thermodynamics scale of temperature is.

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Centigrade

Fahrenheit

Kelvin

Celsius

Force acting on the piston to move outward is.

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Compressive stoke

Power stoke

All stoke

Exhaust stoke

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

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25%

50%

70%

100%

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

According to first law of thermodynamics the quantity which is conserved.

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Force

Momentum

Energy

Power

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

Which one is true for isothermal process.

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Q = 0

W = 0

Q = W(D) Delta U = 0

None of these

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

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Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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