Q.

Match items of column I and II.                             [2023]

  Column I   Column II
  (Mixture of compounds)   (Separation Technique)
A. H2O/CH2Cl2 I. Crystallization
B. II. Differential solvent extraction
C. Kerosene / Naphthalene III. Column chromatography
D. C6H12O6/NaCl IV. Fractional distillation

Choose match is:

1 A – (iii), B – (iv), C – (ii), D – (i)  
2 A – (i), B – (iii), C – (ii), D – (iv)  
3 A – (ii), B – (iv), C – (i), D – (iii)  
4 A – (ii), B – (iii), C – (iv), D – (i)  

Ans.

(4)

(A) CH2Cl2 and H2O do not mix and form two separate layers, so they can be separated by differential solvent extraction.

(B) Column chromatography.

(C) Fractional distillation, kerosene and naphthalene are different types of hydrocarbons that have different boiling points.

(D) Crystallization, C6H12O6 and NaCl are different compounds with different chemical and physical properties. As a result, they can be separated from each other by crystallization.