The synthetic fibre A is chemically a polyamide whereas the synthetic fibre B contains a large number of ester groups. Another synthetic fibre ‘C’ made of a polymer D which consists of a number of glucose units formed one after the other :
Which fibre (A, B or C) contains the same type of groups as those in a PET jar?

Give examples which indicate that nylon fibres are very strong.

Explain why plastic containers are favoured for storing food.

Explain the difference between the thermoplastic and thermosetting plastics.

Explain why the following are made of thermosetting plastics.

(a) Saucepan handles

(b) Electric plugs/switches/plug boards

Categorise the materials of the following products into ‘can be recycled’
and ‘cannot be recycled’:
Telephone instruments, plastic toys, cooker handles, carry bags, ball point
pens, plastic bowls, plastic covering on electrical wires, plastic chairs,
electrical switches.

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

Give examples to show that plastics are noncorrosive in nature.

Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.

‘Avoid plastics as far as possible’. Comment on this advice.

Match the following  of column I correctly with the phrases given in column II: