Q61 / 200 · NEET 2008 (Screening) · Chemistry

Which one of the following statements is not true?

  • A
    In vulcanisation, the formation of sulphur bridges between different chains make rubber harder and stronger
  • Correct answer
    B
    Natural rubber has the trans-configuration at every double bond
  • C
    Buna-S is a copolymer of butadiene and styrene
  • D
    Natural rubber is a 1,4-polymer of isoprene

Solution

Natural rubber is cis-polyisoprene and is prepared from latex which is obtained from rubber tree (Hevea brasitiensis).

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

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