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Online Tests
Physics 9th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
Land and Sea breezes are the results of:
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Conduction
Convection
Radiation
Conduction and Radiation
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Question # 2
In atoms and molecules are packed closely together:
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Solids
Gas
Liquid
Plasma
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Question # 3
In houses, good thermal insulation means _____________ consumption of fuel:
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Lower
Higher
Normal
None
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Question # 4
Wood, cork,cotton, wool , rubber are the examples of:
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Conductor
Thermal conductor
Insulator
Both a & b
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Question # 5
Thermoflask is used maintain:
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Heat
Temperature
Density
Pressure
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Question # 6
Land and sea breezes are the result of:
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Absorption
Radiation
Conduction
Convection
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Question # 7
Poor conductor of heat is:
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Copper
Aluminium
Water
Iron
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Question # 8
Thermal conductivities of Lead
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23
30
35
85
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Question # 9
The substances through which heat does not conduct:
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Conductors
Bad conductors
Insulators
Both B and C
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Question # 10
Rooms are heated using gas heaters by
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Conduction only
Convection and radiation
Radiation only
Convection only
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Question # 11
More radiation is reflected by the surface:
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White
Coloured
Black
Rough
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Question # 12
Leslie's cube is a bod of
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Metal
None Metal
wood
Metalloids
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Question # 13
Metals are good conductor of heat due to
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Free Electrons
Big size of their molecules
Small size of their molecules
Rapid vibrations of their atoms
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