2. Sample Papers
  3. 9th Class
  4. General Knowledge

9th Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-15

  • question_answer
    Who invented deuterium (heavy water)?

    A)  James Young Simpson

    B)  R.A. Millikan

    C)  H.C. Urey

    D)  Benjamine Franklin

    E)  None of these   

    Correct Answer: C

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