Question

2. Define the following
(a) Polymer (b) Synthetic fibre
3. (a) Which material is used for making plugs, switches?
(b) Name the plastic used for making non-stick pans.
(c) Give one reason to support the use of teflon in non-stick pans.
4. Give examples, which indicate that nylon fibres are very strong
5. Name the plastic whose sheets are used for packing liquids.
6. How is artificial silk made?
7. Why nylon is used for making parachutes?
8. Can bacteria break down plastics?
9. Write any tree important properties and uses of nylon.
10. Give the characteristic properties and important uses of the following (i). Polythene (ii). Polystyrene (iii). Teflon

Answer 1

Answer:

a natural or artificial chemical compound consisting of large molecules is called polymer.