Which polymer is used in the manufacture of contact lenses for the eyes?

Three-dimensional molecules with cross-links are formed in the case of a

Identify the polymer obtained by heating $n$ moles of isobutylene with $n$ moles of isoprene at $100^{\circ} C$ in the presence of anhydrous $AlCl_{3}$.

Explain the process of vulcanization of rubber.

Adipic acid is used in the preparation of

Write down the name of monomers,structure of polymer and uses for the following polymers.