JEE Main · 2022 · 29 Jul 2022 · Shift 1 · Surface Chemistry

100 mL of

5% (w / v)

solution of NaCl in water was prepared in 250 mL beaker. Albumin from the egg was poured into NaCl solution and stirred well.

This resulted in a/ an :

(A)Lyophilic sol✓ Correct
(B)Lyophobic sol
(C)Emulsion
(D)Precipitate

Answer: (A)

Solution

Albumin is a protein that forms a lyophilic (solvent-loving) sol when dispersed in aqueous NaCl solution. Lyophilic sols are stable colloids where the dispersed phase has a strong affinity for the dispersion medium. This is a standard method for preparing lyophilic sols.

JEE Main · 2022 · 29 Jul 2022 · Shift 1 · Single correct option

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