Per NCERT, on what principle is purification by CRYSTALLIZATION based?
ADifference in the boiling points
BDifference in the magnetic properties
CDifference in the colour of substances
DDifferences in the solubility of the desired substance at different temperatures — it stays soluble while impurities don't (or vice versa)
Answer & Solution
Correct answer: D. Differences in the solubility of the desired substance at different temperatures — it stays soluble while impurities don't (or vice versa)
Per NCERT, crystallization exploits solubility differences at different temperatures. The other options describe other techniques.
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