Question

C.
Urve reasons for the following.
1) Woollen clothes keep us warm in winters.
2)
Animals like sheep and yak have a thick coat of hair.
3) During the rearing of silkworms, the eggs are warmed to a suitable temperature.
4)
The cocoon of silk moth is immersed into hot water.​

Answer 1

Answer:

1-Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.2-A thick coat of hair helps in trapping a lot of air. As, air is a poor conductor of heat, it keep these animals warm. so animal like sheep and yak have a thick coat of hair.3-during the rearing of silkworms the eggs are warmed to a suitable temperature because by process of heating eggs of silkworm we can find silk coming out of it and this can be done at suitable temperature only.4-Cocoon silk of silk moth is immersed in hot water to easily extract pure silk from silk moths.

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