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Is it true that a desert cooler works better on a rainy day?

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a

True

b

False

answer is B.

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Detailed Solution

The above statement is false. The process of evaporation is responsible for cooling in surroundings. Evaporation depends on humidity, the amount of water vapour in the air. If the humidity is less, then evaporation is more, and if the humidity is more, then evaporation is less. On a rainy day, the air has high humidity, meaning the evaporation rate will be less. The water inside the desert cooler will not evaporate faster. Hence there will be almost no or very least cooling. So, a desert cooler does not work better on a rainy day. The correct statement is desert cooler doesn't work on rainy days.

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