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

9th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    Calculate the percentage of oxygen in water by mass.

    A) 88.9%

    B) 11.1%

    C) 91.2%

    D) 8.8%

    E) None of these

    Correct Answer: A

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