Question

Short Answer Type I Questions:
1. What are human-made or synthetic fibres?
2. What is meant by polymer?
3. Why is nylon used for making bristles of toothbrushes?
4. What is 4-R principle?
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Answer 1

1)Fibres which are made by humans with chemical synthesis is called human made or synthetic fibre.

2)Polymers are huge chains of similar smaller molecules called monomers.

3)Nylon is a natural plastic material which can be made into fibres and it is very strong as well as flexible.

4)Refuse, Reduce, Reuse, Recycle and Recover

Answer 2

1. Human made fibres like nylon,rayon,polythene

4. Reuse, recycle, recover, reduce