Q.

Which of the following is a surface phenomenon?

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a

Boiling

b

Evaporation

c

Condensation

d

Freezing

answer is A.

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Detailed Solution

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Evaporation is a surface phenomenon because, during evaporation, the molecules with higher kinetic energy dissipate into the air from the topmost layer of the liquid. 

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Which of the following is a surface phenomenon?