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Evaporation occurs only _____

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+1 vote
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in Dairy Engineering by (789k points)
Evaporation occurs only _____

(a) after boiling

(b) after extreme cooling

(c) at surface of a liquid

(d) if boiling occurs at atmospheric pressure

I got this question in examination.

My question is from Evaporator in chapter Building Blocks of Dairy Processing of Dairy Engineering

1 Answer

+1 vote
by (1.3m points)
Correct choice is (c) at surface of a liquid

The best I can explain: Evaporation takes place at a surface and below the boiling point. The surface atoms or molecules gains energy from surroundings and overcome the attractions of other molecules & get to vaporize.

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