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JEE · NEET Previous Year Question

Match List - I with List - II.

Choose the correct answer from the options given:

Topic: JEE PYQ

Answer: A. Full step-by-step solution below.

  1. A(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
  2. B(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
  3. C(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
  4. D(A)-(II), (B)-(III), (C)-(IV), (D)-(I)

Correct answer: A

Solution

(a)
The correct matching is:
(A) Simple distillation (III) Chloroform + Aniline
(B) Fractional distillation (I) Diesel + Petrol
(C) Distillation under reduced pressure (IV)
Glycerol + Spent-lye
(D) Steam distillation (II) Aniline + Water
So the answer is Option A.
Brief rationale:
Simple distillation (A):
•
• is large, so the lower-boiling chloroform distils off cleanly.
Fractional distillation (B):
• Petrol and diesel have overlapping but distinct boiling-range cuts.
• A fractionating column resolves them efficiently.
Vacuum distillation (C):
• Glycerol boils at 1 atm - too high for normal distillation.
• Lowering the pressure brings its boiling point down, letting you separate it from the spent-lye.
Steam distillation (D):
• Aniline () can be co-distilled with water around , avoiding thermal decomposition and separating it from the aqueous phase.

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