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9th Class Science Is Matter Around Us Pure Question Bank 9th CBSE Science Is Matter Around Us Pure

  • question_answer
      The teacher instructed three students A,B and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). Student A dissolved 50g of NaOH in 100 mL of water. Student B dissolved 50g of NaOH in 100g of water. The student C dissolved 50g of NaOH in water to make 100mL of solution. Which one of them has made the desired solution and Why?

    Answer:

                              Student C has prepared the desired solution.      Mass by volume


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