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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
In gases, heat is mainly transferred by
Choose an answer
Molecular collision
Conduction
Convection
Radiation
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Question # 3
In solid, heat is transferred by:
Choose an answer
Radiation
Conduction
Convection
Absorption
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Question # 4
More radiation is reflected by the surface:
Choose an answer
White
Coloured
Black
Rough
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Question # 5
At night , the air from land to begins towards sea called:
Choose an answer
Land breeze
Sea breaze
Both A and B
Radiation
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Question # 6
Land and Sea breezes are the results of:
Choose an answer
Conduction
Convection
Radiation
Conduction and radiation
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Question # 7
The quantity of heat absorbed by the body depends upon:
Choose an answer
Colour of surface
Nature of surface
Shape of surface
Both a & b
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Question # 8
The quantity of heat absorbed by the body depends upon:
Choose an answer
Colour of surface
Nature of surface
Shape of surface
Both a and b
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Question # 9
There are ______ modes of transfer of heat:
Choose an answer
1
2
3
4
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Question # 10
Room are heated using gas heaters by:
Choose an answer
Conduction only
Convection and radiation
Radiation only
Convection only
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Question # 11
Good conductor is :
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Air
Wood
Iron
None
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Question # 12
Anything kept in thermos :
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In temperature remain constant
Its temperature decrease
Its temperature increase
None of these
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Question # 13
The main source of energy in the unierse is:
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Moon
Stars
Sun
Planets
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