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Online Tests
Physics 9th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
In building central heating system works on the process of:
Choose an answer
Covection
Radiation
Conduction
both a and b
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Question # 2
A Leslie cube is a:
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Metal box
Wooden box
Glass box
None
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Question # 3
Convection of heat is the process of heat transfer due to the
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Random motion of molecules
Downward movement of molecules
Upward movement of molecules
Free movement of molecules
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Question # 4
Land and sea breezes are the result of:
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Absorption
Radiation
Conduction
Convection
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Question # 5
Convection of heat is the process of heat transfer due to the:
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Random motion of molecules
Downward movement of molecules
Upward movement of molecules
Free movement of molecules
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Question # 6
How does heat reaches form sun to earth through?
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Conduciton
Convection
Radiation
None
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Question # 7
Flow of thermal energy from hot body cold body is called:
Choose an answer
Specific heat
Latent heat
Transfer of heat
Heat capacity
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Question # 8
At night , the air from land to begins towards sea called:
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Land breeze
Sea breaze
Both A and B
Radiation
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Question # 9
A silvery white surface is a :
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Worst reflector
Best reflector
Worst absorber
Best absorber
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Question # 10
There are ways to transfer the heat from one place to another.
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1
2
3
4
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Question # 11
In houses, good thermal insulation means _____________ consumption of fuel:
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Lower
Higher
Normal
None
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Question # 12
The temperature of a black dull surface on heating :
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Rise Rapidly
Fall Rapidly
Becomes zero
Remain constant
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Question # 13
In gases, heat in mainly transferred by:
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Molecular collision
Conduction
Convection
Radiaiton
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