Which of these plastics is a polymer?
(a) bakelite
(b) polystyrene
(c) polythene
(d) all of these

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Solution

(d) all of these
A polymer is a macromolecule composed of many repeated subunits, known as monomers. Bakelite is a phenol formaldehyde resin. Polystyrene is a synthetic aromatic polymer made from the styrene monomer. Polythene is a thermoplastic polymer consisting of long hydrocarbon chains.

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