JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Acetaldehyde and acetone differ in their reaction with [KCET 1989]

    A)                 Sodium bisulphite

    B)                 Ammonia

    C)                 Phosphorus pentachloride

    D)                 Phenyl hydrazine

    Correct Answer: B

    Solution :

               \[C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-H+N{{H}_{3}}\to C{{H}_{3}}-\underset{N{{H}_{2}}\,\,\,\,}{\overset{OH\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-H}}}\,}}}\,\]                 \[2C{{H}_{3}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}+N{{H}_{3}}\to C{{H}_{3}}-\underset{N{{H}_{2}}}{\overset{C{{H}_{3}}\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\overset{|\,\,\,\,\,\,\,\,\,}{\mathop{C\,\,-\,}}}\,}}}\,C{{H}_{2}}\overset{O}{\mathop{\overset{|\,|}{\mathop{-C\,\,\,}}\,}}\,-C{{H}_{3}}\]


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