Which of the following polymers is used in the manufacture of non-stick cookware?

The plastics that are hard become soft and readily workable by the addition of certain compounds called:

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

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ Dacron is an example of polyester polymer.
Reason $R:$ Dacron is made up of ethylene glycol and terephthalic acid monomers.
In the light of the above statements,choose the most appropriate answer from the options given below.

Which of the following polymers has an ester linkage?

The ‘mercerised cellulose’ is chemically prepared by