Which of the following compounds is present in natural rubber as a monomer?

Which of the following compounds is present in natural rubber as a monomer?
  1. 1, 3-Butadiene
  2. 2-Chloro-1,3-butadiene
  3. Styrene
  4. 2-Methyl-1,3-butadiene

Asked in: MHT CET 2020 (15 Oct Shift 2)

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