Which of the following polymers is used in the manufacture of chewing gum?

The process of vulcanisation makes rubber:

Arrange the following polymers in order of increasing strength of their intermolecular forces:
$Nylon-6$ $(A)$,$Neoprene$ $(B)$,$Polyvinyl$ $chloride$ $(C)$

Natural rubber is a polymer of

Identify the polymer used to obtain disposable cups and plates.

Write a short note on the melamine-formaldehyde polymer.