Synthetic Fibres and Plastics

Synthetic fibres and plastics Worksheet-4

1. We should not wear synthetic clothes in summer, why?

2. Give some uses of PET.

3. Why is melamine used for making kitchenware?

4. Why are plastics preferred for storing pickles?

5. Handles of frying pans are made of plastic. Why?

6. Differentiate between biodegradable and non-biodegradable materials.

Synthetic fibres and plastics Worksheet-5

11. What are the properties of polythene?

12. Explain why plastic containers are favoured for storing food.

13. Explain why the following are made of thermosetting plastics:

(a) Saucepan handles, (b) Electric plugs/switches/plug boards.

14. Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advice Rana, giving your reason.

15. Give examples to show that plastics are noncorrosive in nature.