Question

crystallisation is a better technique than simple operation give one reason to justify the statement​

Answer 1

Answer:

Explanation: Crystallisation and evaporation are both separation techniques. However crystallisation is considered better because crystallisation helps in separating impurities from a mixture. ... In case of crystallisation you will get the pure form of salt. That's why crystallisation is considered better.

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Answer 2

Answer:

Extent of purification in case of crystallisation technique is very high. Crystallisation does not require very high temperature conditions, there is no need to boil the solvent. In evaporation, we allow the solution to heat to make the solvent evaporate but this may degrade the solute into some another compound.