Question # 1

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

Rooms are heated using gas heaters by

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Conduction only

Convection and radiation

Radiation only

Convection only

Worst absorber of heat is:

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Dull black surface

Coloured surface

Shinning silvered surface

White surface

The insulator of heat is:

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Cork

Cotton

Wood

All

The quantity of heat absorbed by the body depends upon:

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Colour of surface

Nature of surface

Shape of surface

Both a & b

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

The bad conductor of heat is:

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Iron

Copper

Air

Aluminum

Leslie's cube is a box of:

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Metal

Non-Metal

Wood

Metalloids

Those objects which do not conduct electricity are called.

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Insulator

Semi conductor

Nil

Conduct

The sun's surface temperature is :

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3,000 K

3,030 k

6,000 K

600 K

The process in which heat is transfer due to actual movement of molecule is called.

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Conduction

radiation

Convection

All of these

Feathers of bird give good thermal:

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Conduction

Insulation

Convection

None of these

Thermos flask, is used to maintain:

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Heat

Temperature

Density

Pressure

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