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  • Which condition out of the following will increase the evaporation of water (a) Increase in temperature of water (b) Decrease in temperature of water (c) Less exposed surface area of water

Which condition out of the following will increase the evaporation of water?

(a) Increase in temperature of water
(b) Decrease in temperature of water
(c) Less exposed surface area of water
(d) Adding common salt to water

Answers (1)

Ans. A

Sol.

In case of evaporation, some liquid molecules take energy from rest of the liquid molecules and get converted in vapour.

If we increase the temperature of any liquid, it would be easy for some molecules to take the energy from rest of the molecules. As at higher temperature, all of them have higher amount of energy which will help process of evaporation.

The process of evaporation will be supported by exposure of surface to the surrounding, hence higher surface area leads to higher evaporation.

When we add common salt in water, some part of this salt covers the surface area along with water molecules which will create obstacles in evaporation.

Hence the correct answer of this question is option A.

Posted by

Gurleen Kaur

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