JEE Main & Advanced Chemistry Polymers / बहुलक Question Bank Composition, Properties and uses of Polymers

  • question_answer
    Natural rubber contains several thousand units of X linked together in the polymer chain. X is [NCERT 1980, 84; BHU 1983; CBSE PMT 1991; MP PMT 2001]

    A)                 Neoprene          

    B)                 Isoprene

    C)                 Chloroprene     

    D)                 Styrene

    Correct Answer: B

    Solution :

              Isoprene \[(C{{H}_{2}}=\underset{C{{H}_{3\,\,\,\,\,}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-CH}}\,}}\,=C{{H}_{2}})\]


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