Question

1.Name the form of polyester which is replacing materials like glass and used for making bottles and jars 2.Which of the two is thermosetting plastic—PVC or bakelite? 3.Draw a diagram to show the: (a) linear arrangement of units in plastic. (b) cross-linked arrangement of units in plastic. 4.Why is nylon considered to be a good material for making fishing nets? 5.Why electric plugs and switches are made of plastic? 6.Why people prefer wearing cotton clothes over synthetic during summer? 7.Why sheep have a thick coat of hair on their body? 8.What is selective breeding? 9.Out of scouring or shearing, which process comes first in the production of wool from sheep?

Answer 1

Answer:

1. thermoplastic

2. bakelite

Explanation: