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9th Class Physics Chapter 9 Transfer of Heat English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
All are conductors except:
Choose an answer
Copper
Wires
Steel
Wood
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Question # 2
Worst absorber of heat is:
Choose an answer
Dull black surface
Coloured surface
Shinning silvered surface
White surface
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Question # 3
Room are heated using gas heaters by:
Choose an answer
Conduction only
Convection and radiation
Radiation only
Convection only
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Question # 4
Leslie cube have faces:
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2
3
4
5
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Question # 5
False celling is done to
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Lower the height of ceiling
Keep the roof clean
cool and room
Insulate the ceiling.
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Question # 6
In thermo flask radiation is stopped by using :
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Green color
Transparent
Silver color
Nil
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Question # 7
Feathers of bird give good thermal:
Choose an answer
Conduction
Insulation
Convection
None of these
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Question # 8
Which surface is bad emitter:
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White surface
Black surface
Coloured surface
Silver surface
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Question # 9
The bad conductor of Heat is:
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Iron
Copper
Air
Aluminium
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Question # 10
Shining silvered surface is a best:
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Emitter
Absorber
Reflector
None of these
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Question # 11
Heat can be transmitted form one object to the other by
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convection
radiation
conduction
all of these
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Question # 12
Larger number of slots are made in radiators to increase:
Choose an answer
Surface temperature
Surface area
Both A and B
Nonr
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Question # 13
The main source of energy n the universe is:
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Moon
Stars
Sun
Planets
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