Question # 1

Rooms are heated using gas heater by:

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Conduction only

Convection and radiation

Radiation only

Convection only

See breeze blows form sear to land during:

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day

night

after noon

morning

In building central heating system works on the process of:

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Covection

Radiation

Conduction

both a and b

Poor conductor of heat is:

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Copper

Aluminium

Water

Iron

The sun's surface temperature is :

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3,000 K

3,030 k

6,000 K

600 K

The rate at which various surface absorb heat depends upon:

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Nature of surface

Nature of liquid

Radiation

Emission & absorption

A Leslie cube is use to identify :

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Radiation

Conduction

Convection

Both A and B

Thermos flask, is used to maintain:

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Heat

Temperature

Density

Pressure

Leslie cube have faces:

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2

3

4

5

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

Metals are good conductor of heat dut to the:

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Free electron

Big size of their molecule

Small size of their molecules

Rapid vibrations of their atoms

The transfer of heat by vibrating molecules in solids :

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Conduciton

Radiation

Convection

None

In atoms and molecules are packed closely together:

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Solids

Gas

Liquid

Plasma

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