JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    When acetaldehyde reacts with \[PC{{l}_{5}},\] the resulting compound is                                           [MP PMT 1992, 93]

    A)                 Ethyl chloride    

    B)                 Ethylene chloride

    C)                 Ethylidene chloride        

    D)                 Trichloro acetaldehyde

    Correct Answer: C

    Solution :

               \[C{{H}_{3}}-CHO+PC{{l}_{5}}\to \]\[\underset{\begin{smallmatrix}  \text{Ethylidene}\,\,\,\text{Chloride} \\  \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{or}  \\  \,\,\,\,\,\,\,\text{Gem}\,\,\,\text{dihalide} \end{smallmatrix}}{\mathop{C{{H}_{3}}-CH<\,\begin{matrix}    Cl  \\    Cl  \\ \end{matrix}+POC{{l}_{3}}}}\,\]


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