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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The a-amino acid which does not give purple colour in the ninhydrin test is

    A)  proline                                

    B)  glycine

    C)  lysine                                  

    D)  aspartic acid

    Correct Answer: A

    Solution :

                    Ninhydrin test is highly specific for primary amines. Proline being a secondary amine give a yellow orange colour with ninhydrin whereas all other a-amino acids give a blue-purple colour with ninhydrin.


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