Question

Match separation methods in Group I with associated properties in Group II. 
    Group I                            Group II
P. Centrifugation                1. Density 
Q. Dialysis                           2. Diffusivity 
R. Solvent extraction         3. Size 
S. Ultrafiltration                 4. Solubility 
 

• A. P-4, Q-2, R-1, S-3
• B. P-3, Q-1, R-2, S-4
• C. P-1, Q-3, R-2, S-4
• D. P-1, Q-2, R-4, S-3

Hint:

Centrifugation → density; Dialysis → diffusion; Extraction → solubility; Ultrafiltration → size.

Answer 1

The Correct Option is D

P. Centrifugation → 1. Density
Centrifugation separates components based on differences in density under high centrifugal force. Denser particles sediment faster.
Q. Dialysis → 2. Diffusivity
Dialysis relies on diffusion across a semipermeable membrane. Small molecules diffuse out faster due to higher diffusivity.
R. Solvent extraction → 4. Solubility
This method separates components based on differential solubility in two immiscible solvents. Greater solubility allows better extraction.
S. Ultrafiltration → 3. Size
Ultrafiltration membranes retain large molecules and allow smaller molecules to pass through— a size-based separation.
Thus, the matching pattern corresponds to option (D).