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Physics 9th Class English Medium Unit 8 Online Test MCQs With Answers

Question # 1

Specific heat of water is how many times greater than that of dry soil?

Choose an answer

two times

three time

four times

five times

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Question # 2

Which expands on heating?

Choose an answer

Water

Steel

Copper

All are true

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Question # 3

What will be the value of β for a solid for which α has a value of 2 x 10^-5 C^-1

Choose an answer

2 x 10^-5 K^-1

6 x 10^-5 K^-1

8 x 10^-15 K^-1

8 x 10^-5K^-1

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Question # 4

Water freezes at:

Choose an answer

0° F

32°F

-273 K

0 K

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Question # 5

Process by which liquids changes into vapors is ............... .

Choose an answer

Vaporization

Evaporation

Boiling

None of above

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Question # 6

Heat capacity of 5 kg water is.

Choose an answer

2000 JK^-1

2100 JK^-1

21000 JK^-1

210000 JK^-1

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Question # 7

Degree of hotness or coldness a body is called:

Choose an answer

Heat

Internal Energy

Temperature

Potential energy

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Question # 8

There are types of thermometer:

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Question # 9

The changing of a liquid into vapours from the surface of the liquid

without heating:

Choose an answer

Cooling

Vaporization

Evaporation

Sublimation

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Question # 10

The specific heat of water is

Choose an answer

2100 Jkg-1 k-1

4200 Jkg-1 k-1

2500 Jkg-1 k-1

2010 Jkg-1 k-1

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Question # 11

A large water reservoir keeps the temperature of nearby land moderate due to

Choose an answer

Low temperature of water

Low specific heat of water

Less absorption of heat

Large specific heat of water

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Question # 12

The Celsius lower reference point is 0^oC while upper reference point is:

Choose an answer

212 ^oC

180^oC

100^oC

110^oC

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Question # 13

Which of the following material has large specific heat?

Choose an answer

Copper

Ice

Water

Mercury

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