1. Why it hurts when someone pulls our hair but not when we go for hair cut
2. What do you understand by the process of crystallisation? Write its uses.
3. What is meant by convection? Why convection cannot takes place in solid
Answers
Answer:
Because we want some hair style and that time we were happy
Answer:
1. Answer. Hair is made up of proteins, which are dead cells. They are attached to the scalp with living cells, from where they grow. So, while getting a haircut a person does not feel pain because dead cells are being cut, but when it is pulled from scalp the living cells are also being pulled along.
2.Crystallization is a common and useful laboratory technique. It can be used to purify substances, and can be combined with advanced imaging techniques to understand the nature of the substances crystallized. In laboratory crystallization, a substance can be dissolved into an appropriate solvent.
3.Convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place. ... Convection, additionally may take place in soft solids or mixtures where solid particles can move past each other.
Explanation:
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