What would you observe when (i) a saturated solution of potassium chloride prepared at \( 60^{\c...

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What would you observe when
(i) a saturated solution of potassium chloride prepared at \( 60^{\circ} \mathrm{C} \) is allowed to \( \operatorname{cool} \) to room temperature?
(ii) an aqueous sugar solution is heated to dryness?
(iii) a mixture of iron filings and sulphur powder is heated strongly?
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