JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkyne

  • question_answer
    Which of the following reactions is shown by alkynes [AMU 1984; RPMT 2000]

    A) Addition

    B) Substitution

    C) Polymerization

    D) All of these

    Correct Answer: D

    Solution :

               Addition -   \[CH\equiv CH+3{{H}_{2}}\xrightarrow{Ni}C{{H}_{3}}-C{{H}_{3}}\]                    Substitution -                                   \[CH\equiv CH+Na\xrightarrow{{}}CH\equiv {{C}^{-}}N{{a}^{+}}+\frac{1}{2}{{H}_{2}}\]                    Polymerization - \[3CH\equiv CH\underset{\text{Polymerization}}{\mathop{\xrightarrow{\text{hot}\,\,Cu\,\,\text{tube}}}}\,\underset{\text{Benzene}}{\mathop{{{C}_{6}}{{H}_{6}}}}\,\]


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