Which of the following polymers contains nitrogen?

Write down the preparation,uses and properties of Bakelite.

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 molecular weight of cellulose varies between

Why are cross-links introduced in rubber for practical applications?

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