RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

  • question_answer
    Which one of the following responds to Tollens test?

    A)  \[C{{H}_{3}}COC{{H}_{3}}\]  

    B)         \[C{{H}_{3}}CHO\]

    C)         \[HCOOH\]    

    D)         \[{{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\]

    Correct Answer: B

    Solution :

    Aldehydes responds to Tollens test. \[R-CHO+2[{{(Ag{{(N{{H}_{3}})}_{2}}]}^{+}}+3O{{H}^{-}}\xrightarrow{{}}\]                 \[RCO{{O}^{-}}+\underset{Silver\,mirror}{\mathop{2Ag+4N{{H}_{3}}}}\,+2{{H}_{2}}O\]


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