(a) The monomers of novolac are o-and/or p-hydroxymethylphenol derivatives.
(b) The monomer of neoprene is 2- Chloro- 1, 3- butadiene.
(c) The monomers of Buna- S are styrene and 1,3- Butadiene.
(a) (i) Bakelite
(b) Buna-N s a type of rubber, Polystyrene is a type of thermoplastic polymer and Terylene is a type of fibre.
The intermolecular forces are strongest in fibres then in plastics and weakest in rubbers. Thus, polymers in increasing order of intermolecular forces are arranged as follows-
Buna-N < Polystyrene < Terylene
(c) Biodegradable polymers are those polymers which can be decomposed by microorganisms with time and do not cause pollution. E.g. PHBV, Nylon 2–nylon 6, etc
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