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WorkShop Calculation and Science
HEAT TEMPERATURE AND PRESSURE
Set 4
Set 4
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Q12781
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Which kind of heat transmission takes places by up-ward flow?
A
Conduction
B
Convection
C
Radiation
D
Reflection
Q12782
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Which one is the radiation method of heat transmission?
A
An iron rod is heated with one of its end and heat transmitted to other end
B
Cold water goes to the bottom from top while on heating the water
C
On heating gases, heat transmitted to surroundings
D
The heat from sun travels through the space
Q12783
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What is called if the length of the solid expands when heated?
A
Linear expansion
B
Superficial expansion
C
Cubical expansion
D
Area expansion
Q12784
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What is the change in length per unit original length per degree rise in temperature is called?
A
Co-efficient of friction
B
Co-efficient of linear expansion
C
Co-efficient of superficial expansion
D
Co-efficient of cubical expansion
Q12785
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What is the unit of co-efficient of linear expansion?
A
Number / Degree C
B
Number / Degree C / meter length
C
Number / Degree C / mm length
D
Number / Degree C / cm length
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