NEET Chemistry Aldehydes, Ketones Question Bank Self Evaluation Test - Aldehydes, Ketons and Carboxylic Acids

  • question_answer
    The starting compounds needed to make the following compound?

    A) benzaldehyde and 3-pentanone

    B) acetophenone and 2-butanone

    C) acetophenone and butanal

    D) benzaldehyde and 2-pentanone

    Correct Answer: A

    Solution :

    [a] \[{{C}_{6}}{{H}_{5}}-\underset{H}{\overset{O}{\mathop{\underset{|}{\overset{||}{\mathop{C}}}\,}}}\,+\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\xrightarrow[\Delta ]{KOH,C{{H}_{3}}OH}\] \[{{C}_{6}}{{H}_{5}}-\overset{OH}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}C{{H}_{3}}\xrightarrow{-{{H}_{2}}O}\]                          \[{{C}_{6}}{{H}_{5}}-\overset{{}}{\mathop{\overset{{}}{\mathop{C}}\,}}\,H-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}C{{H}_{3}}\]


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