Question # 1

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

No of spark plugs needed in the diesel engine are.

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0

1

2

3

The increase in thermal pollution of environment means.

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Increase in the entropy

Decrease in the entropy

Entropy remains constant

Entropy becomes zero

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

Which one is true for isothermal process.

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Q = 0

W = 0

Q = W(D) Delta U = 0

None of these

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

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25%

50%

70%

100%

The efficiency of diesel engine is about

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25 % to 30%

35% to 40%

40% to 50%

50% to 60%

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

Efficiency of steam locomotive is.

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8%

10%

9%

7%

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Physics English Medium Fsc Part 1 Chapter 11 Online MCQs Test MCQs With Answers

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