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Natural rubber is a polymer derived from ?

  • A.Isoprene
  • B.Ethylene
  • C.Propylene
  • D.Butadiene

Answer: A

Natural rubber is derived from isoprene, 2-methyl-1,3-butadiene.

The latex tapped from Hevea brasiliensis contains cis-1,4-polyisoprene. The cis geometry keeps the chains from packing closely, which is what makes the material elastic.

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