Which of the following polymers is used as a wool substitute?

Of the following,which one is classified as a polyester polymer?

Explain the process of vulcanization of rubber.

If $\bar{M}_w$ is the weight average molecular weight and $\bar{M}_n$ is the number average molecular weight of a polymer, the poly dispersity index $(PDI)$ of the polymer is given by

Which of the following statements is incorrect about $Novolac$?

Nylon polymers are