MHT CET 2023 Chemistry question

Not in JEE Main or NEET syllabus

Which from following statements is untrue about natural rubber?

(A)It is a linear polymer
(B)In this polymer chain has coild structure
(C)In this polymer chains are held together by weak van der Waals forces
(D)It is obtained from chloropreneCorrect

Answer: (D)

Solution

Natural rubber is cis-1,4-polyisoprene, obtained by polymerising isoprene (2-methylbuta-1,3-diene) units; it is a linear polymer (a is true), the cis configuration gives the chains a coiled (spring-like) structure, so it can be stretched (b is true), and the

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Question ID VK-098043