Main constituent of natural rubber is_________________?
Correct answer: D. Polyisoprene
- A. Polystyrene
- B. Poly chloroprene
- C. Polybutadiene
- D. Polyisoprene
Explanation
Natural rubber is chiefly cis-1,4-polyisoprene, formed from isoprene units. Polybutadiene and polychloroprene are synthetic rubbers with different repeating units.
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