In the vulcanization of rubber,........ $(\%)$ percent of sulfur is used.

Write the full form of $PHBV$. Also,write down its preparation and uses.

Which of the following is not a polyamide?

If the number average molecular weight and weight average molecular weight of a polymer are $40000$ and $60000$ respectively, the polydispersity index of the polymer will be

Which of the following polymers is used to obtain electrical and telecommunication hardware?

Which among the following is a biodegradable polymer?