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CBSE Class 7 Answered

In which of the following process does water need to absorb energy? a. Formation of clouds b. Transpiration c. Precipitation d. Formation of snow
Asked by Nimmi | 25 Jan, 2019, 05:31: PM
answered-by-expert Expert Answer

When water vapor condenses into a cloud and falls as rain, it releases heat. Hence, the formation of clouds, precipitation, and formation of snow does not involve absorption of energy. When liquid water evaporates, latent heat is absorbed—cooling the atmosphere. Similarly, during transpiration when water is lost in the form of water vapour through evaporation, the water needs to absorb energy.

So, the correct answer is option b. 

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