Assertion: Glycerol is purified by distillation under reduced pressure. Reason: Method of distillation under reduced pressure is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points.

Question

Assertion: Glycerol is purified by distillation under reduced pressure. Reason: Method of distillation under reduced pressure is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Distillation under reduced pressure arrow It is used to purify liquids having very high boiling points and those, which decompose at or below their boiling point. Glycerol, at normal pressure, the b.p. of glycerol is 563 K but it decomposes on this temperature. Therefore, under reduced pressure of 12 mmHg, glycerol can be distilled at 453 K without decomposition.

Q. Assertion : Glycerol is purified by distillation under reduced pressure. Reason : Method of distillation under reduced pressure is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion : Glycerol is purified by distillation under reduced pressure.
Reason : Method of distillation under reduced pressure is used to purify liquids having very high boiling points and those, which decompose at or below their boiling points.