Question # 1

False ceiling is done to

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Lower the height of ceiling

Keep the roof clean

Cool the room

Insulate the ceiling

Good conductor is :

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Air

Wood

Iron

None

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

Dull black surface is a best:

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Emitter

Absorber

Reflector

None of these

The bad conductor of heat is:

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Iron

Copper

Air

Aluminum

The amount of heat absorb by body depends on the :

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Colour of the surface

Nature of surface

Texture of surface

Both A and B

Dull black surface are good ____________

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Absorber

Radiator

Conductor

None of these

Thermos flask, is used to maintain:

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Heat

Temperature

Density

Pressure

The brids stretch out their wings and circle in the rising currents of hot air called

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conduction

convection

radiation

thermals

The substances through which heat does not conduct:

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Conductors

Bad conductors

Insulators

Both B and C

................ causes coastal breeze.

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Conduction

Convection

Radiation

Nil

____________ from sun are major source of energy on earth.

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Light

Radiation

Both a & b

None of these

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

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9th Class Physics Chapter 9 Transfer of Heat English Medium KPK Boards Online Mcqs MCQs With Answers

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