Manipal Engineering Manipal Engineering Solved Paper-2015

  • question_answer
    Which of the following pairs give positive Tollen's test?

    A)  Glucose, sucrose

    B) Glucose, fractose

    C) Hexanal, ace. to phenone

    D) Fractose, sucrose

    Correct Answer: B

    Solution :

    Aldehyde and a-hydroxy ketones give positive Tollen's test. Glucose has an aldehyde group and fructose is an a-hydroxy ketone.


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