JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkyne

  • question_answer
    \[CH\equiv CH\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{{{H}_{2}}O/H{{g}^{2+}}}}}\,X\xrightarrow{LiAl{{H}_{4}}}Y\xrightarrow{{{P}_{4}}/B{{r}_{2}}}Z\]Here Z is [JIPMER 2002]

    A) Ethylene bromide

    B) Ethanol

    C) Ethyl bromide

    D) Ethylidene bromide

    Correct Answer: C

    Solution :

               \[CH\equiv CH\underset{{{H}_{2}}S{{O}_{4}}}{\mathop{\xrightarrow{{{H}_{2}}O/H{{g}^{2+}}}}}\,{{H}_{3}}C-\underset{(\times )}{\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}}\,-H\]\[C{{H}_{3}}-\underset{(y)}{\mathop{C{{H}_{2}}}}\,-OH\xrightarrow{{{P}_{\text{4}}}\text{/}B{{r}_{2}}}\underset{(z)}{\mathop{{{C}_{2}}{{H}_{5}}Br}}\,\]


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