Prachi took 50 ml of water in two beakers at room temperature. She added sodium chloride to one beaker and sugar to the other, till no more solute would be dissolved in it. Then she heated the contents of the beakers and added more solutes in them.
(a) Will the amount of salt and sugar dissolved in water be the same at the same temperature ?
(b) What will you expect to happen if she cools the contents of the beakers ? Justify your answer.
CBSE Class IX Science SA 1 ( 2 marks)
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(a) No, the amount of salt and sugar dissolved in water will not be the same at the same temperature.
(b) On cooling the content of the beakers, crystals of salt and sugar will appear. This is because solubility of a solid decreases with decrease in temperature.
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