NEET 2025 · ChemistryPrevious Year Question
Match List I (Mixture) with List II (Method of Separation).List I List II A. + I. Distillation under reduced pressure B. Crude oil in the petroleum industry II. Steam distillation C. Glycerol from spent-lye III. Fractional distillation D. Aniline-water IV. Simple distillation
| List I | List II |
|---|---|
| A. + | I. Distillation under reduced pressure |
| B. Crude oil in the petroleum industry | II. Steam distillation |
| C. Glycerol from spent-lye | III. Fractional distillation |
| D. Aniline-water | IV. Simple distillation |
Answer: (C) A-IV, B-III, C-I, D-II. \textbf{Answer:} (c) \textbf{Solution:} Chloroform and aniline differ widely in boiling point, so they are separated by simple distillation (A-IV).
- A.A-III, B-IV, C-I, D-II
- B.A-III, B-IV, C-II, D-I
- C.A-IV, B-III, C-I, D-II✓
- D.A-IV, B-III, C-II, D-I
Correct Answer
(C) A-IV, B-III, C-I, D-II
Solution & Explanation
\textbf{Answer:} (c) \textbf{Solution:} Chloroform and aniline differ widely in boiling point, so they are separated by simple distillation (A-IV). The components of crude oil have close, graded boiling points and need fractional distillation (B-III). Glycerol decomposes near its boiling point, so it is separated from spent-lye by distillation under reduced pressure (C-I). Aniline is steam-volatile and immiscible with water, so it is purified by steam distillation (D-II).
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