This method is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points.

Fractional distillation

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Distillation under high pressure

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Distillation under reduced pressure

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Solution

The correct option is C
Distillation under reduced pressure

Distillation under reduced pressure is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points.

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Similar questions

(A) Simple distillation	(i) To separate the liquids which are steam volatile, insoluble in water and contains non-volatile impurities.
(B) Fractional distillation	(ii) To separate liquids which decompose at a temperature below their normal boiling points
(C) Vacuum distillation	(iii) To separate two or more liquids which have boiling points close to each other.
(D) Steam distillation	(iv) To separate liquid from non-volatile impurities.

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