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CMC Medical CMC-Medical VELLORE Solved Paper-2011

  • question_answer
    Which of the following stain is obtained from the female scale insect Coccus cacti?

    A)  Carmine             

    B)  Orcein

    C)  Haematoxytin                 

    D)  Crystal violet

    Correct Answer: A

    Solution :

                    Carmine is produced from female cochineal insect after treatment with alum; it was introduced by Goppen and Conn in 1849.


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