Question

Match items of column I and II

Column I (Mixture of compounds)		Column II (Separation Technique)
A	$H _2 O /CH _2 Cl _2$	i	Crystallization
B		ii	Differential solvent extraction
C	Kerosene/Naphthalene	iii	Column chromatography
D	$C _6 H _{12} O _6 / NaCl$	iv	Fractional Distillation

• A. A-(iii), B-(iv), C-(ii), D-(i)
• B. A-(i), B-(iii), C-(ii), D-(iv)
• C. A-(ii), B-(iv), C-(i), D-(iii)
• D. A-(ii), B-(iii), C-(iv), D-(i)

Answer 1

Answer: (D)

A. $H _2 O / CH _2 Cl _2 \rightarrow$ ii, $CH _2 Cl _2> H _2 O$ (density) so they can be separated by differential solvent extraction.

C. Kerosene / Naphthalene $\rightarrow$ iv. Fractional distillation.
Due to different B.P. of kerosene and Naphthalene it can be separated by fractional distillation.
D. $C _6 H _{12} O _6 / NaCl \rightarrow$ i. Crystallization.
$NaCl$ (ionic compound) can be crystallized.