6th Class Science Separation of Substances Question Bank Sepration and Substances

  • question_answer
    The weight of dried residue obtained by heating 100 ml of a saturated solution of salt was found to be 7 g. It shows that the solubility of salt in water is (in g/100 ml)

    A) 7                     

    B)          5

    C) 6                                 

    D) can't predict

    Correct Answer: A

    Solution :

        Solubility of salt in water = 7 g/ml. This is because solubility is the maximum amount of solute that can be dissolved in 100 ml of a solvent i.e.\[\frac{7}{100}\times 100=7g\] Note: The volume of solution is taken as the volume of solvent because the volume of solute (a solid) is negligible as compared to that of a liquid.


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