The molecular weight of cellulose varies between

Which of the following polymers is used to obtain tyre cords?

The number average molecular mass of a polymer that contains $15$ molecules with each of mass $8,000$ and $15$ molecules with each of mass $80,000$ is: (in $,000$)

The structure of Nylon $-6$ is

The polydispersity index $(PDI)$ of a polymer is ($\bar{M}_w = \text{weight average molecular mass}$ and $\bar{M}_n = \text{number average molecular mass}$)

The polymer chains are held together by hydrogen bonding in a polymer $X$. Polymer $X$ is formed from monomers $Y$ and $Z$. What are $Y$ and $Z$ ?

$CH_2=CH-C_6H_5$	$H_2N(CH_2)_6NH_2$	$CH_2=CH-CH=CH_2$	$CH_2=CH-CN$	$HO_2C(CH_2)_4CO_2H$
$A$	$B$	$C$	$D$	$E$