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  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1998

  • question_answer
    Discovery of positive rays is helpful in discovery of:

    A)  proton                

    B)         isotopes

    C)  electrons           

    D)         \[\text{-}\]particles

    Correct Answer: B

    Solution :

    Discovery of positive rays helped in discovery of isotopes.


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