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UPSC Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Chemistry, Matter and its Composition

  • question_answer
          The phenomenon of radioactivity was invented by

    A) Maril Curie

    B)                  Pierre Curie

    C) Henry Bacquerel

    D)        J.J Thompson

    Correct Answer: C

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