Question

4. Long answer questions.
i.Give five differences between a solution, a colloid and a suspensic
ii. Give reasons for the following.
a. You prefer to wear cotton clothes during summer.
b.Water stored in an earthen vessel becomes cool.​

Answer 1

Explanation:

2) We get a lot of sweat during summer and cotton is a good absorber of water so it absorbs the sweat from our body and exposes it to the air for evaporation.The evaporation of this sweat cools our body.This is the reason why we wear cotton clothes during summer.

3) The earthen pot has a large number of extremely small pores on its wall.This water evaporates continuosly and take the latent heat required for vaporisation from the earthen pot and remaining water.In this way the remaining water loses heat and gets cooled.

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