MEDIUMMCQ SINGLENEET ChemistryOrganic ChemistryPolymersPrevious Year Questions

Structures of some common polymers are given. Which one is not correctly presented? (AIPMT 2009)

A.Teflon (CF₂–CF₂)n

B.Neoprene✓ Correct

C.Terylene

D.Nylon 66 [NH(CH₂)₆ NHCO(CH₂)₄–CO–]n

Explanation

Neoprene is prepared by the free radical polymerization of chloroprene (2-chlorobuta-1-3-diene). the reaction of preparation of neoprene is as shown below, The given structure has one extra methylene group. Hence, (b) is the incorrect representation of the polymer. Thus, (b) is the correct option.

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