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NEET2020ChemistryPolymersActual

Which of the following is a natural polymer?

Options

  1. Apoly (Butadiene-styrene)
  2. Bpolybutadiene
  3. Cpoly (Butadiene-acrylonitrile)
  4. Dcis-1, 4-polyisoprene

Correct answer

D. cis-1, 4-polyisoprene

Step-by-step solution

Natural rubber is a polymer of isoprene. The chemical name of isoprene is 2 - methyl- 1 , 3 - butadiene and its chemical formula is CH 2 = C ( CH 3 ) − CH = CH 2 . Isoprene is a liquid that is colourless and volatile. As we can see from the formula it has two double bonds. So answer is cis- 1 , 4 -polyisoprene

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