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12th Class Chemistry Biomolecules / जैव-अणु Question Bank Case Based (MCQs) - Biomolecules

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

    A) Glucose forms cyanohydrin with HCN.

    B) Glucose reacts with hydroxylamine to form an oxime.

    C) Pentaacetate of glucose does not react with hydroxylamine.

    D) Glucose is oxidised by nitric acid to gluconic acid.

    Correct Answer: C

    Solution :

    Pentacetate of glucose does not react with hydroxylamine showing absence of free \[-CHO\]group. This cannot be explained by open structure of glucose.


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