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Hotness and Coldness

Heat exchange...

Question

Heat exchange takes place___.

A

for two bodies at different temperatures kept in contact

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B

for two bodies at same temperature kept in contact

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C

only in metals

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D

only in alloys

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Solution

The correct option is A
for two bodies at different temperatures kept in contact

When two bodies having a difference in temperature are put in contact, heat exchange takes place.

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