JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Propanal on treatment with dilute sodium hydroxide forms [Kerala CET 2000]

    A)                 \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}CHO\]

    B)                 \[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{2}}C{{H}_{2}}CHO\]

    C)                 \[C{{H}_{3}}C{{H}_{2}}CH(OH)CH(C{{H}_{3}})CHO\]

    D)                 \[C{{H}_{3}}C{{H}_{2}}COONa\]

    Correct Answer: C

    Solution :

               \[C{{H}_{3}}C{{H}_{2}}-\underset{H}{\overset{O}{\mathop{\underset{|}{\overset{||}{\mathop{C}}}\,}}}\,\bullet \,\,+\,\,H\,\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,}{\overset{\alpha }{\mathop{CH}}}\,}}\,-CHO\xrightarrow{O{{H}^{-}}}\] \[C{{H}_{3}}-C{{H}_{2}}-\overset{OH}{\mathop{\overset{|\,\,\,\,\,}{\mathop{CH}}\,}}\,-\underset{C{{H}_{3}}\,\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{CHCHO}}\,}}\,\]


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