JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkyne

  • question_answer
    The number of \[\pi -\text{bonds}\] in the product formed by passing acetylene through dilute sulphuric acid containing mercuric sulphate is [EAMCET 1997]

    A) Zero

    B) One

    C) Two

    D) Three

    Correct Answer: B

    Solution :

     \[CH\equiv CH+{{H}_{2}}O\underset{HgS{{O}_{4}}}{\mathop{\xrightarrow{\text{dil}\text{.}\,{{H}_{2}}S{{O}_{4}}\,}}}\,C{{H}_{2}}=C-OH\to \]\[C{{H}_{3}}-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-H\]


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