JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Benzaldehyde on reaction with acetophenone in the presence of sodium hydroxide solution gives          [BVP 2003]

    A)                 \[{{C}_{6}}{{H}_{5}}CH=CHCO{{C}_{6}}{{H}_{5}}\]

    B)                 \[{{C}_{6}}{{H}_{5}}COC{{H}_{2}}{{C}_{6}}{{H}_{5}}\]

    C)                 \[{{C}_{6}}{{H}_{5}}CH=CH{{C}_{6}}{{H}_{5}}\]

    D)                 \[{{C}_{6}}{{H}_{5}}CH(OH)CO{{C}_{6}}{{H}_{5}}\]

    Correct Answer: A

    Solution :

               \[{{C}_{6}}{{H}_{5}}CHO+C{{H}_{3}}CO{{C}_{6}}{{H}_{5}}\underset{-{{H}_{2}}O}{\mathop{\xrightarrow{NaOH}}}\,\]\[\underset{\text{Benzyl  acetophenone}}{\mathop{{{C}_{6}}{{H}_{5}}-CH=CH-\overset{_{||}^{O}}{\mathop{C}}\,-{{C}_{6}}{{H}_{5}}}}\,\]


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