The synthetic polymer which resembles natural rubber is

Which among the following is $NOT$ a polyester polymer?

Which of the following statements correctly describes the condensation polymers of the polyamide category?

Nylon $66$ is

$A$ polymer sample contains $3$ molecules of molar mass $10^3$, $3$ molecules of molar mass $500$, and $4$ molecules of molar mass $200$. What is its weight average molecular mass?

Which among the following polymers exhibit hydrogen bonding?