JEE Main & Advanced Sample Paper JEE Main Sample Paper-33

  • question_answer
    The compound responds to Tollen's reagent is:

    A)  \[C{{H}_{3}}COO{{H}_{3}}\],

    B)                     \[C{{H}_{3}}CHO\]

    C)  \[C{{H}_{3}}CON{{H}_{2}}\],    

    D)  \[C{{H}_{3}}COOH\]

    Correct Answer: B

    Solution :

    Tollen's reagent is a mild oxidising agent and oxidizes only aldehydes to form silver mirror. It is used to differentiate between aldehydes and ketones             \[RCHO\,+2[Ag{{(N{{H}_{3}})}_{2}}]OH\xrightarrow{\,}\,RCOON{{H}_{4}}\] \[\,+2Ag\downarrow \,+3N{{H}_{3}}\]\[+{{H}_{2}}O\]


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