1.

Which of the following structures represents neoprene polymers?A. `-"("CH_(2)-underset(Cl)underset(|)C=CH-CH_(2)-")"_(n)`B. `-"("CH_(2)-overset(CN)overset(|)CH-")"_(n)`C. `-"("CH_(2)-overset(Cl)overset(|)CH-")"_(n)`D. `-"("underset(C_(6)H_(5))underset(|)(CH)-CH_(2)-")"_(n)`

Answer» Correct Answer - A
Neoprene (synthetic rubber) is a polymer of chloroprne , i.e. 2-chloro-1,3-butadiene.
`nH_(2)C=underset(("chloroprene"))underset("2-chloro-1,3 butadiene")underset(Cl)underset(|)(C)-underset(H)underset(|)C=CH_(2)overset("Polymerisation")to`
`-[CH_(2)-underset(("synthetic rubber"))underset("Neoprene")underset(Cl)underset(|)(C)=underset(H)underset(|)C-H_(2)-]_(n)`


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