Which of the following is a polymer containing nitrogen?

Which polymer is obtained from the monomers $CH_2=CH-CH=CH_2$ and $CH_2=CH-CN$?

Which one of the following is used to make 'non-stick' cookware?

Orlon fibres are made up of:

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

If the number average molecular weight and weight average molecular weight of a polymer are $40000$ and $60000$ respectively, the polydispersity index of the polymer will be