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Q.

The desert cooler cool better on a hot, dry day due to


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a

Evaporation

b

Sublimation

c

Vaporization

d

Boiling 

answer is A.

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Detailed Solution

The desert cooler cools better on a hot, dry day due to the evaporation.
On a hot and dry day, the moisture level is very low in the atmosphere, which increases evaporation. Due to the faster evaporation, the cooler works well. That’s why the cooler cools better on a hot day. We can also say that the desert cooler works based on evaporation which transforms the liquid water into water vapour and reduces the temperature of the dry air.
 
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