Statement I: A liquid boils at at a temperature at which, its vapour pressure is lower than the external pressure.
Statement II: Glycerol can be separated from spent-lye in soap industry by using the technique of steam distillation.

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Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I.

Statement I is correct but Statement II is incorrect.

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I.

Both Statement I and Statement II are incorrect.

answer is D.

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Detailed Solution

A liquid boils at a temperature at which, its vapour pressure becomes equal to the external pressure. Distillation under reduced pressure method is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points. Glycerol can be separated from spent-lye in soap industry by using this technique.

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