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JEE Main & Advanced JEE Main Paper Phase-I (Held on 09-1-2020 Evening)

  • question_answer
    A, B and C are three biomolecules. The results of the tests performed on them are given below [JEE MAIN Held on 09-01-2020 Evening]
    Molisch?s Test Barfoed Test Biuret Test
    A Positive Negative Negative
    B Positive Positive Negative
    C Negative Negative Positive
    A, B and C are respectively:

    A) A = Lactose, B = Fructose, C = Alanine

    B) A = Lactose, B = Glucose, C = Alanine

    C) A = Glucose, B = Fructose, C = Albumin

    D) A = Lactose, B = Glucose, C = Albumin

    Correct Answer: D

    Solution :

    - All carbohydrates give, Molisch?s test - Barfoed test is specific for monosaccharide - Biuret test is used for detecting the presence of peptide bonds


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