JEE Main202331 Jan 2023Morning ShiftChemistryGeneral Organic ChemistryActual
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
Options
- AA - ( iii ) ,   B - ( iv ) ,   C - ( ii ) ,   D - ( i )
- BA - ( ii ) ,   B - ( iii ) ,   C - ( iv ) ,   D - ( i )
- CA - ( i ) ,   B - ( iii ) ,   C - ( ii ) ,   D - ( iv )
- DA - ( ii ) ,   B - ( iv ) ,   C - ( i ) ,   D - ( iii )
Correct answer
B. A - ( ii ) ,   B - ( iii ) ,   C - ( iv ) ,   D - ( i )
Step-by-step solution
A. Dicholoromethane and H 2 O do not mix & form two separate layers. So they can be separated by Differential solvent extraction. B. Column chromatography is a technique in which the substances to be separated are introduced onto the top of a column packed with an adsorbent, passed through the column at different rates that depend on the affinity of each substance for the adsorbent and for the solvent or solvent mixture, and are usually collected in solution as they pass from the column at different times. Thus, th