What are polyamides?
Name one synthetic polymer containing - CN group. Give its formula.
Define copolymerisation? Give one example.
State how rayon is different from silk?
Give two examples of polymers that belong to the class of formaldehyde resins.
Mention two uses of Nylon-6, 6.
What structural changes are produced during vulcanization of rubber?
Which is better material for making PVC pipes a thermosetting plastic or a thermoplastic?
Classify the following polymers as chain growth and step growth polymers:(i) Buna-S(ii) Nylon-6,6(iii) Terylene (iv) PVC