Question # 1

Which one is a good conductor?

Choose an answer

cotton

air

wool

iron

At night , the air from land to begins towards sea called:

Choose an answer

Land breeze

Sea breaze

Both A and B

Radiation

Thermal conductivities of Lead

Choose an answer

23

30

35

85

Central heating systems in buildings operate by

Choose an answer

Conduction

Radiation

Convection

Condensation

The temperature of a black dull surface on heating :

Choose an answer

Rise Rapidly

Fall Rapidly

Becomes zero

Remain constant

Worst absorber of heat is:

Choose an answer

Dull black surface

Coloured surface

Shinning silvered surface

White surface

Heat form one of a metal rod a reaches to the other by the process of

Choose an answer

convection

radiation

conduction

both (a) and (b)

Poor conductor of heat is:

Choose an answer

Copper

Aluminium

Water

Iron

Thermoflask is used maintain:

Choose an answer

Heat

Temperature

Density

Pressure

If heat Q flows in time 't' through some metal then rate of flow of heat is defined as

Choose an answer

Flow of heat = 2Qt

Flow of heat = Q/t

Flow of heat = t/Q

Flow of heat = Qt

Those objects which do not conduct electricity are called.

Choose an answer

Insulator

Semi conductor

Nil

Conduct

The insulator of heat is:

Choose an answer

Cork

Cotton

Wood

All

Convention is done by ____________

Choose an answer

Vibration of atoms

Actual movement of particles

Same as conduction

Nil

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer