Q. Structures of some common polymers are given. Which one is not correctly presented?
A) Neoprene: [–CH₂–C(Cl)=CH–CH₂–CH₂–]ₙ
B) Terylene: [–OC–C₆H₄–COOCH₂–CH₂–O–]ₙ
C) Nylon 66: [–NH(CH₂)₆NHCO(CH₂)₄–CO–]ₙ
D) Teflon: [–CF₂–CF₂–]ₙ
Explanation
[Solution from source] Neoprene is polychloroprene, [–CH₂–C(Cl)=CH–CH₂–]ₙ, made from chloroprene (four carbons per unit). The given formula has an extra CH₂, so it is incorrect. The terylene, nylon 66 and teflon repeat units are correctly shown. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.