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NEET-XII-Chemistry

exam-1 year:2016

with Solutions -
Qstn# 57 Prvs-QstnNext-Qstn
  • #57
    Natural rubber has
    (1) All cis-configuration
    (2) All trans-configuration
    (3) Alternate cis-and trans-configuration
    (4) Random cis-and trans-configuration
    digAnsr:   1
    Ans : (1)
    Sol. CH2 C CH CH2
    CH3
    Isoprene
    polymerisation CH2
    CH3 H
    CH2
    n
    cis-polyisoprene