Which of the following is a natural polymer ?

1. cis-1,4-polyisoprene

2. poly (Butadiene-styrene)

3. polybutadiene

4. poly (Butadiene-acrylonitrile)

Doubtly Asked 30 Oct 2026 NEET UG 2020 neet Save WhatsApp Report

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Answer: 1. cis-1,4-polyisoprene

Natural rubber is cis-1,4-polyisoprene, a polymer made by plants.

Poly(butadiene-styrene) (SBR), polybutadiene and poly(butadiene-acrylonitrile) (Buna-N) are synthetic. Answer: option (1).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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