Q26 / 84 · NTA Abhyas (NEET) 2020 · Chemistry · Polymers

What is incorrect regarding natural rubber?
1. It is cis polyisoprene
2. It is amorphous in nature
3. It has syndiotactic stereochemistry
4. Molecules of rubber have coiled conformation

  • A
    1, 2
  • B
    2, 4
  • C
    1, 2, 3
  • Correct answer
    D
    1, 2, 4

Solution

Natural Rubber is cis polyisoprene, amorphous in nature and its molecules have coiled conformation but it has isotactic stereochemistry not syndiotactic.

Hence, the correct answer is option: 'D'.

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