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JEE Main & Advanced Chemistry Aldehydes, Ketones Question Bank Properties

  • question_answer
    Which of the following is used to detect aldehydes [MHCET 2004]

    A)                 Million's test

    B)                 Tollen's reagent

    C)                 Neutral ferric chloride solution

    D)                 Molisch's test

    Correct Answer: B

    Solution :

               Tollen's reagent is used to detect aldehydes. Aldehyde reduce Tollen's reagent to give Silver mirror while these are oxidised to acid.                 \[\begin{matrix}    R  \\    H  \\ \end{matrix}>C=O+A{{g}_{2}}O\xrightarrow{{}}RCOOH+\underset{\text{Silver mirror}}{\mathop{2Ag}}\,\]


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