Question # 1

Degree of hotness or coldness a body is called:

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Heat

Internal Energy

Temperature

Potential energy

Boiling point of water is:

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0 ^oC

100^oC

212^oC

180^oC

Normal human body temperature is

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15oC

37oC

37oF

98.6oC

Which gas is used inspite of Freon gas in refrigerator?

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CO₂

H₂

NH₃

N₂

If a liquid of mass 'm' requires thermal energy 'ΔQv' to completely change into gas at its boiling point without any change in its temperature, then its latent heat of vapourization can be calculated as following:

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Hv = m/ΔQv

Hv = mΔQv

Hv = cmΔQv

Hv =ΔQv/m

When ice is cooled below 0 ^oC it:

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Expand

Contracts

Boils

None of these

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

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Low temperature of water

Low specific heat of water

Less absorption of heat

Large specific heat of water

Specific heat of water is J kg^-1 K^-1IS:

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4200

4000

1000

2500

Melting point is also known as:

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Moiling point

Freezing point

Fusion point

None of these

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

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212 ^oC

180^oC

100^oC

110^oC

Bimetal strip is made up of two different metal:

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Copper & iron

Brass & Iron

Brass & Nickel

Copper & Nickel

Latent heat of fusion is denoted by:

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H1

Hm

Hv

Hf

The temperature at which a solid start melting is:

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Freezing point

Melting point

Fusion point

Both B and C

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