Question

1. Give three uses each of nylon and acrylic
2. Define the following
(a) Polymer (b) Synthetic fibre<br />
3. (a) Which material is used for making plugs, switches?<br />
(b) Name the plastic used for making non-stick pans.<br />
(c) Give one reason to support the use of teflon in non-stick pans.<br />
4. Give examples, which indicate that nylon fibres are very strong<br />
5. Name the plastic whose sheets are used for packing liquids.<br />
6. How is artificial silk made?<br />
7. Why nylon is used for making parachutes?<br />
8. Can bacteria break down plastics?<br />
9. Write any tree important properties and uses of nylon.<br />
10. Give the characteristic properties and important uses of the following (i). Polythene (ii). Polystyrene (iii). Teflon<br />
11. Explore the cities where plastics are completely banned on internet and what kind of replacement is being used in those countries.​

Answer 1

Answer:

Nylon is used to make syntactic clothes and also use in the making of fish NAT it's also use as a industrial uses. Your 2nd ans is a substances which has a molecular structure formed by a large units of small things . 3rd ans is plastic is used mainly in the making of plugs. Nylon is very strong since it is used in the making of bags and fishing nets. 5thans is polyethylene terephthalate . Rylon is known as artificial silk

Answer 2

A polymer is a macromolecule formed by the long chains of small chemical units called monomer.

The fibre which is made by man in labs using chemical are called synthetic fibres.

Material is used for making plugs, switches is bakelite.

Plastic used for making non-stick pans is teflon.

Oil and water do not stick on the surface of teflon. So, Plastic used for making non-stick pans is teflon.