(a) Charcoal treatment removes coloured impurity through adsorption. (b) Steam distillation separates the mixture of o-nitrophenol and p-nitrophenol. The o-nitrophenol is steam volatile (due to intramolecular hydrogen bonding), and the para isomer is not volatile. (c) Fractional distillation separates crude naphtha. Naphtha is a flammable liquid hydrocarbon mixture. (d) Distillation under reduced pressure separates mixture of glycerol and sugars. Vacuum distillation lowers the boiling point and prevents decomposition.
JEE Main 2018 — Chemistry Organic Chemistry
2018mcqeasy
The correct match between items of List-I and List-II is : 
Official previous-year question
Held on 15 Apr 2018 · Verified 6 Jul 2026.
Options
- A
(A)-(r),(B)-(s), (C)-(p),(D)-(q)
- B
(A)-(p),(B)-(s), (C)-(r),(D)-(q)
- C
(A)-(r), (B)-(p), (C)-(q), (D)-(s)
- D
(A)-(r),(B)-(p), (C)-(s),(D)-(q)
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