JCECE Engineering JCECE Engineering Solved Paper-2015

  • question_answer
    Proteins when heated with conc.\[HN{{O}_{3}}\]give yellow colour. This is known as

    A)  Hoppe's test

    B)  acid-base test

    C)  Biuret's test

    D)  Xanthoprotic test

    Correct Answer: D

    Solution :

    Protein + conc.\[HN{{O}_{3}}\xrightarrow{\Delta }\]yellow colour This test is called xanthoprotic test. It is given by those proteins which consists of a-amino acid containing benzene ring\[,e.g.,\] tyrosine.


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