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B
(i)−(R);(ii)−(P);(iii)−(Q)
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C
(i)−(P);(ii)−(Q);(iii)−(R)
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D
(i)−(Q);(ii)−(R);(iii)−(P)
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Solution
The correct option is C(i)−(P);(ii)−(Q);(iii)−(R) (A)Styrene(Ph−CH=CH2) is the monomer unit of Buna-S.
(B) Monomers of terylene are terephthalic acid and ethylene glycol.
(C) Chloroprene (CH2−CCl−CH=CH2)is an elastomer.
Therefore,
option (a) is correct