Question

we do not wear clothes made up of pure synthetic fibre but mixture of synthetic fibers and natural fibers. Why is it necessary

Answer 1

Natural fibres : Fibres which are obtained from natural sources like plants(cotton, jute, flax,coir) and animals(wool ,silk) are called natural fibres.

Synthetic fibres : Those fibres which are made by human being in industries with the help of chemical and petroleum products are called synthetic fibres are man made fibres. Rayon, nylon, dacron , polyester are some common synthetic fibres.

Disadvantages of synthetic fibres:
1.They do not allow air to pass freely through them and hence are not good for summer.
2. They burn easily and quite fast.
3. Synthetic fibres cause skin diseases

Clothes that are made of mixture of synthetic fibre and natural fibres are popular these days because adding synthetic fibres to natural fibres increase strength and durability of the fabric and for the sake of cost, washability, look , climate and daily needs. Mixture of synthetic fibre and natural fibres have the characteristic of both the fibres and hence they are comfortable to wear.
Blended fabric is made by using both natural and synthetic fibre.for e.g Terycot cloth is made from both terylene as well as cotton Fibres.

HOPE THIS WILL HELP YOU

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Answer 2

because pure synthetic fibres do not absorb sweat and it is not comfortable to wear it in summer and rainy season.

I hope it helps