9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Hydrogen and oxygen combine in the ratio 1: 8 by mass to form water. What mass of oxygen gas would be required to react completely with 8 g of hydrogen gas?

    A) 16 g

    B) 24 g

    C) 32 g

    D) 64 g

    E) None of these

    Correct Answer: D

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