Synthetic Fibres and Plastics

Synthetic fibres and plastics Worksheet-1

1. Which of the following is the synthetic fibre is used for making carpets and blankets?

A. Wool                                           B. Rayon

C. Acrylic (orlon or acrilon)       D. Polywool

2. Rayon is different from synthetic fibres because-

A. It has a silk-like appearance.

B. It is obtained from wood pulp.

C. Its fibres can also be woven like those of natural fibres.

Synthetic fibres and plastics Worksheet-2

1. Which material is used for making plugs, switches?

2. Name the plastic used for making non-stick pans.

3. Give one reason to support the use of teflon in non-stick pans.

4. Classify the given polymers into thermoset and thermoplastic.

(a) Melamine         (b) Thermocol

5. What is a polymer?

6. What are synthetic fibres?

Synthetic fibres and plastics Worksheet-3

16. What is polyester?

17. Name the fabric obtained by mixing polyester and cotton.

18. How are synthetic fibres made?

19. Name the plastic which is used for insulating electric wires.

20. Name the plastic which is used for making pipes for insulating electric installations.

21. What is the difference between thermosetting plastics and thermoplastics?