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Question

Why is crystallization better than evaporation to dryness?

A
Solids get charred in evaporation
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B
Solids get decomposed in evaporation
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C
Impurities do not get removed in evaporation
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D
All of above
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Solution

The correct option is D All of above
Purification by crystallization is a better technique as compared to evaporation by dryness. Some solids like sugar decompose or get charred in evaporation to dryness. Also, impurities are not removed in this method. However, all these drawbacks are overcome in crystallization.

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