11.
Which of the following is used as non-stick coating for cooking utensils?

12.
The fibre least prone to catch fire is

13.
Which of the following is used to make light weight, but strong plastic ?

14.
Which of the following fibres catches fire least ?

15.
Non-stick kitchenwares are coated with

16.
Terylene is a condensation polymer of ethylene glycol and which acid?

17.
The material known in commerce as Terylene is a

18.
Nylon is a type of

19.
Nylon is made up of :

20.
Nylon threads are made of