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    Question

    Which out of the following is a non-reducing

    sugar?
    A Fructose Correct Answer Incorrect Answer
    B Glucose Correct Answer Incorrect Answer
    C Mannose Correct Answer Incorrect Answer
    D Sucrose Correct Answer Incorrect Answer

    Solution

    Sucrose is a non-reducing sugar because its anomeric carbons are involved in a glycosidic bond and cannot open to form a free aldehyde or ketone group. Fructose, glucose, and mannose are reducing sugars. 

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