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JEE Main 2026 Apr 8 Shift 2, Chemistry Q12: Vapour Pressure Of A Solution

JEE Main2026Apr 8, Shift 2Chemistry
Q.

Given below are two statements :

Statement I : Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.

Statement II : The vapours rising up in the fractionating column become richer in high boiling component of the mixture.

In the light of the above statements, choose the correct answer from the option given below :

  1. A

    Both Statement I and Statement II are true

  2. B

    Both Statement I and Statement II are false

  3. C

    Statement I is true but Statement II is false

  4. D

    Statement I is false but Statement II is true

Solution

Statement I. In a fractionating column, the component with the higher boiling point has a lower vapour pressure and condenses sooner on the column packing, while the lower-boiling component remains gaseous and ascends further. True.

Statement II. The repeated condensation–vaporization cycles in the column progressively enrich the rising vapours in the more volatile (lower-boiling) component, not the high-boiling one. False.

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