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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-17

  • question_answer
    Calculate the mass percentage of each element present in water.

    A) H = 22.22% and O = 77.78%

    B) H = 77.78% and O = 22.22%

    C) H = 11.11% and O = 88.89%

    D) H = 88.89% and O = 11.11%

    E) None of these

    Correct Answer: C

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