NEET2026ChemistryChapterActual
An analytical chemist needs to perform the following four separations: (I) Separation of a mixture of ether (b.p. 308 K ) and toluene (b.p. 384 K ) (II) Separation of two miscible liquids having a boiling point difference of 12 K (III) Purification of an organic liquid that decomposes at its normal boiling point (IV) Separation of o -nitrophenol from a mixture containing p -nitrophenol Which of the following sequence
Options
- AFractional distillation, Simple distillation, Distillation under reduced pressure, Steam distillation
- BSimple distillation, Fractional distillation, Distillation under reduced pressure, Steam distillation
- CSimple distillation, Fractional distillation, Steam distillation, Distillation under reduced pressure
- DSteam distillation, Fractional distillation, Distillation under reduced pressure, Simple distillation
Correct answer
B. Simple distillation, Fractional distillation, Distillation under reduced pressure, Steam distillation
Step-by-step solution
For (I), simple distillation is used for separating liquids having a boiling point difference greater than 25 K . Here, the difference is 384 K - 308 K = 76 K . For (II), fractional distillation is used for separating miscible liquids having a boiling point difference less than 25 K . Here, the difference is 12 K . For (III), distillation under reduced pressure is used for purifying liquids that decompose at or near their normal boiling points. Lowering the pressure decreases the boiling point, preventing decomposi