Question

D. Give reasons for each of the following.
1. Wool is ideal for making winter clothing.
2. Sheep are usually sheared during warm weather.
3. Wool industry workers often develop sorter's disease.
4. Silkworm cocoons are boiled or steamed before silk extraction.
5. Some varieties of sheep are selectively bred.​

Answer 1

Answer:

1 Finally, wool is a very safe fabric and fire-resistant. It's harder to ignite than most synthetic fibres and cotton. It has a low rate of flame spread, it doesn't melt, or drip, and if it does burn it creates a "char" which self-extinguishes.

2

Sheep shearing is done in summer season i.e. during hot weather because they can survive without their thick protective coat of protective hair in summer season. ... The thick coat of hair keep them warm and trap the heat inside their body in the winters

Answer 2

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Q1. Give Reason For Each of the following :-

$\sf{\underline{1.}}$ Wool is Ideal for making winter Clothing ?

$\sf{\underline{Ans. }}$ Wool is a very safe fabric which is fire resistant .Wool is bad conductor of heat . The air Which is trapped between wool fibre prevents flow of heat from our body .

$\sf{\underline{2.}}$ Sheep are usually Sheared during warm weather ??

$\sf{\underline{Ans}}$ Sheep are usually sheared during Warm weather because so they can survive without their thick protective hair .

The Thick protective hair trap heat and keep them warm in cold Weather .

$\sf{\underline{3.}}$ Wool Industry workers often develop Sorter's Disease ??

$\sf{\underline{Ans}}$ The worker of wool industry often develop Sorter's Disease because they often get infected by bacteria Anthrax.

$\sf{\underline{4.}}$ Silkworms Cocoons are boiled before silk extraction ??

$\sf{\underline{Ans.}}$ Cocoons of silkworm are boiled before the Silk Extraction So to get smooth thread from them .

$\sf{\underline{5.}}$ Some varieties of sheep are Selectively Breed ??

$\sf{\underline{Ans.}}$ Some varieties of sheep are Selectively Breed So that Sheep breeders can get improvement in their livestock and production of silk .

                   

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