Question

The correct match between items I and II is :

Item-I (Mixture)	Item-II (Seperation method)
(A) \(\mathrm{H_2O}\) : Sugar	(P) Sublimation
(B) \(\mathrm{H_2O}\) : Aniline	(Q) Recrystallization
(C) \(\mathrm{H_2O}\) : Toluene	(R) Steam distillation
	(S) Differential extraction

• A. A \(\rightarrow\) (R); (B) \(\rightarrow\) (P); (C) \(\rightarrow\) (S)
• B. A \(\rightarrow\) (Q); (B) \(\rightarrow\) (R); (C) \(\rightarrow\) (S)
• C. A \(\rightarrow\) (Q); (B) \(\rightarrow\) (P); (C) \(\rightarrow\) (R)
• D. A \(\rightarrow\) (S); (B) \(\rightarrow\) (R); (C) \(\rightarrow\) (P)

Hint:

Match each mixture with the technique suited to its physical properties: a dissolved solid is recovered by crystallisation, a steam-volatile immiscible liquid by steam distillation, and two immiscible liquids by solvent/differential extraction.

Answer 1

The Correct Option is B

(A) \(\mathrm{H_2O}\) : sugar: a non-volatile solid dissolved in water, purified or recovered by recrystallization, so A \(\rightarrow\) (Q).
(B) \(\mathrm{H_2O}\) : aniline: aniline is steam volatile, immiscible with water and decomposes at its own boiling point, so it is separated by steam distillation, B \(\rightarrow\) (R).
(C) \(\mathrm{H_2O}\) : toluene: two immiscible liquids that separate into layers and are separated by differential extraction (separating funnel), C \(\rightarrow\) (S).
Sublimation (P) is not used for any of these mixtures.
Combination A-Q, B-R, C-S is option (2).
Answer: (2) A \(\rightarrow\) (Q); (B) \(\rightarrow\) (R); (C) \(\rightarrow\) (S)