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