Multiple choice

Which of the following polymers is also known as gutta-purcha?

  1. Trans-polyisoprene

  2. Cis-polyisoprene

  3. Buna-S

  4. Buna-N

  5. None of the above

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A Correct answer
Explanation
  • CH2-CH2- groups of the monomers lie on the trans positions leading to the formation of gutta-purcha.