2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    e/m ratio of an electron is about _____ times that of proton.

    A) 10

    B)  100

    C)  1000   

    D)  2000

    E)  None of these

    Correct Answer: D

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