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  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    A solution is prepared by dissolving 50 g of salt in 450 g of water. Calculate the concentration of the solution by mass.

    A) 2%

    B) 4%

    C) 5%

    D) 10%

    E) None of these

    Correct Answer: D

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