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  3. Haryana PMT

Haryana PMT Haryana PMT Solved Paper-2007

  • question_answer
    PS-I and PS-II were discovered by

    A)  Robert Emerson             

    B)  Blackman

    C)  Robert Mayer                  

    D)  Arnon

    Correct Answer: A

    Solution :

                    Robert Emerson discovered pigment system-I (PS-I) and pigment system-II (PS-II).


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