NEET Chemistry NEET PYQ-Haloalkanes and Haloarenes

  • question_answer
    When \[C{{H}_{3}}C{{H}_{2}}CHC{{l}_{2}}\] is treated with \[NaN{{H}_{2}}\] the product formed is:             [AIPMT 2002]

    A) \[C{{H}_{3}}-CH=C{{H}_{2}}\]         

    B) \[C{{H}_{3}}-C\equiv CH\]

    C) \[C{{H}_{3}}C{{H}_{2}}CH\backslash /N{{H}_{2}}N{{H}_{2}}\]

    D) \[C{{H}_{3}}C{{H}_{2}}CH\backslash /ClN{{H}_{2}}\]

    Correct Answer: B

    Solution :

    [b] \[C{{H}_{3}}-C{{H}_{2}}-CHC{{l}_{2}}\underset{\Delta }{\mathop{\xrightarrow{NaN{{H}_{2}}}}}\,\]\[C{{H}_{3}}-CH=CHCl\underset{\Delta }{\mathop{\xrightarrow{NaN{{H}_{2}}}}}\,\underset{Final\,product}{\mathop{C{{H}_{3}}-C\equiv CH}}\,\]


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