JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Structures of some common polymers are given. Which one is not correctly presented?

(A)Nylon-6,6:
(B)Teflon:
(C)Neoprene: Correct
(D)Terylene:

Answer: (C)

Solution

The printed answer key marks option (c), the neoprene repeat unit, as the one not correctly presented. On independent inspection, the nylon-6,6 unit in (a) correctly shows the amide linkages between hexamethylenediamine (6 carbons) and adipic acid (4 methylenes between carbonyls); the Teflon unit in (b) correctly

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Question ID VK-151532