J & K CET Engineering J and K - CET Engineering Solved Paper-2006

  • question_answer
    All monosaccharides ....... Tollen's reagent.

    A)  oxidises      

    B)  condense with

    C)  reduces       

    D)  add to

    Correct Answer: C

    Solution :

     All monosaccharides reduce Tollen's reagent into silver mirror. \[\underset{\text{glucose}}{\mathop{\underset{C{{H}_{2}}OH}{\overset{CHO}{\mathop{\underset{|}{\overset{|}{\mathop{{{(CHOH)}_{4}}}}}\,}}}\,}}\,+A{{g}_{2}}O\xrightarrow{{}}\underset{\text{gluconic}\,\text{acid}}{\mathop{\underset{C{{H}_{2}}OH}{\overset{\,COOH}{\mathop{\underset{|}{\overset{|}{\mathop{{{(CHOH)}_{4}}}}}\,}}}\,}}\,+\underset{\begin{smallmatrix}  \text{Silver} \\  \text{mirror} \end{smallmatrix}}{\mathop{2Ag\downarrow }}\,\]


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