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MHT CET202522 Apr 2025Morning ShiftChemistryPolymersActual

Identify the monomer of natural rubber.

Options

  1. AIsoprene
  2. BPolyacrylonitrile
  3. CChloroprene
  4. DTetrafluoroethylene

Correct answer

A. Isoprene

Step-by-step solution

Natural rubber is a polymer whose monomer unit is isoprene , or 2-methyl-1,3-butadiene. Polymerization occurs via a cis-1,4 addition to form cis-1,4-polyisoprene. Option analysis: A) Isoprene is the correct monomer. B) Polyacrylonitrile is a polymer, not a monomer. C) Chloroprene is the monomer for neoprene, a synthetic rubber. D) Tetrafluoroethylene is the monomer for Teflon. Only A correctly identifies the monomer of natural rubber.

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