(i) Acrilan – (d)

Acrilan is commonly known as Polyacrylonitrile(PAN) and the structure given in (d) is PAN. It is an addition polymer.

(ii) Polystyrene – (a)

As we know the structure of styrene

We can resemble to the compound provided in (a) that it is polystyrene as it is a product of addition polymerisation.

(iii) Neoprene – (b)

Neoprene is formed by the free radical polymerisation of chloroprene(2-chloro-1,3-butadiene)

The Polymer thus produced is neoprene which is (b).

(iv) Novolac – (e)

Novolac is prepared from phenol(C₆H₅OH) and formaldehyde(HCHO). It is thus known as phenol-formaldehyde resin commonly as Bakelite.

(v) Buna-S – (c)

Buna-S is prepared from two monomers, 1,3-butadiene() and Styrene().