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Question

Transmission of heat by the movement of heated particles is called

A
Conduction
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B
Convection
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C
Radiation
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D
Regelation
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E
Expansion
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Solution

The correct option is B Convection
Convection is a mode of heat transfer in which the molecules near the heat source get heated up, expand, become less dense, and rise upwards. But the relatively colder molecules sink to the bottom and eventually get heated up. Thus the transmission of heat by the movement of heated particles is called convection.

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