Question

Why evaporation is called surface phenomenon

Answer 1

Evaporation is called surface phenomenon as it is related to surface area. As surface area increases the rate of evaporation also increases and as it decreases the rate of evaporation also decreases.

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Answer 2

because  as we put water in the presence of sunlight with duration in time the temperature starts increasing and hydrogen bond of water from the surface starts breaking and the dissociated molecules move upward therefore evaporation takes place from the surface but not inside.