Which of the following is a cross-linked polymer?

In the trinitrocellulose,each glucose unit contains how many $-OH$ groups?

If a polythene sample contains two monodisperse fractions in the ratio $2:3$ with degree of polymerization $100$ and $200$,respectively,then its weight average molecular weight will be

The natural rubber is the polymer of

Which among the following polymers is used to make crockeries?

Identify the addition polymer from the following: