Match the List-I with List-II.

List-I (Mixture) List-II (Method of Separation)
A. CHCl₃ + C₆H₅NH₂ I. Distillation under reduced pressure
B. Crude oil in petroleum industry II. Steam distillation
C. Glycerol from spent-lye III. Fractional distillation
D. Aniline-water IV. Simple distillation

Choose the correct answer from the options given below:

This question was previously asked in
NEET 2025 Official Paper (Held On: 04 May, 2025)
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  1. A-IV, B-III, C-I, D-II
  2. A-IV, B-III, C-II, D-I 
  3. A-III, B-IV, C-I, D-II 
  4. A-III, B-IV, C-II, D-I 

Answer (Detailed Solution Below)

Option 1 : A-IV, B-III, C-I, D-II
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Detailed Solution

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CONCEPT:

Separation of Mixtures

  • Different mixtures require specific methods of separation based on their physical and chemical properties.
  • Some common methods of separation include:
    • Simple Distillation: Used for separating liquids with significantly different boiling points.
    • Fractional Distillation: Used for separating mixtures of liquids with closer boiling points.
    • Distillation Under Reduced Pressure: Used for separating heat-sensitive liquids that may decompose at high temperatures.
    • Steam Distillation: Used for separating substances that are volatile in steam from non-volatile impurities.

EXPLANATION:

  • A. CHCl₃ + C₆H₅NH₂: These are heat-sensitive liquids. Therefore, Distillation under reduced pressure is used.
  • B. Crude oil in petroleum industry: Crude oil is a complex mixture of hydrocarbons that have close boiling points. Therefore, Fractional Distillation is used.
  • C. Glycerol from spent-lye: Glycerol is separated using Simple Distillation.
  • D. Aniline-water: Aniline and water are separated using Steam Distillation as aniline is volatile in steam.
  • A - I (Distillation under reduced pressure)
  • B - III (Fractional Distillation)
  • C - IV (Simple Distillation)
  • D - II (Steam Distillation)

Therefore, the correct answer is A-I, B-III, C-IV, D-II.

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