VMMC VMMC Medical Solved Paper-2013

  • question_answer
    Which of the following reactions of glucose can be explained only by its cyclic structure?

    A)  Glucose forms pentaacetate

    B)  Glucose is oxidised by nitric acid to gluconic acid

    C)  Glucose reacts with hydroxyl amine to form an oxime

    D)  Pentaacetate of glucose does not react with hydroxyl amine

    Correct Answer: D

    Solution :

     Due to absence of free-OH group at \[{{C}_{1}},\] structure of glucose pentaactate cannot revert to open chain aldehydic form and hence cannot form an oxime.


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