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Question
Match list I with List II and select the correct answer using the codes given below the lists:
List I List II (A) Coagulation (1) Scattering (B) Lyophilization (2) Washing of precipitates (C) Peptization (3) Purification of colloids (D) Tyndall (4) Electrolyte
Match list I with List II and select the correct answer using the codes given below the lists:
| List I | List II |
| (A) Coagulation | (1) Scattering |
| (B) Lyophilization | (2) Washing of precipitates |
| (C) Peptization | (3) Purification of colloids |
| (D) Tyndall | (4) Electrolyte |
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Solution
The correct option is D A-4; B-3; C-2; D-1
Coagulation is achieved by the addition of an electrolyte. The colloidal particles adsorb the ions of opposite charge to that present on the surface of the particle. The charge on colloidal particles is neutralized and the repulsion between particles reduces.
Lyophilization is a method of purification of colloids. Other methods include dialysis, ultrafiltration, and ultracentrifugation.
Peptization is the washing of precipitates. It converts a precipitate into colloidal particles by adding a suitable electrolyte.
The Tyndall effect refers to light scattering by colloidal particles. This makes the path of light visible through dispersion.
Coagulation is achieved by the addition of an electrolyte. The colloidal particles adsorb the ions of opposite charge to that present on the surface of the particle. The charge on colloidal particles is neutralized and the repulsion between particles reduces.
Lyophilization is a method of purification of colloids. Other methods include dialysis, ultrafiltration, and ultracentrifugation.
Peptization is the washing of precipitates. It converts a precipitate into colloidal particles by adding a suitable electrolyte.
The Tyndall effect refers to light scattering by colloidal particles. This makes the path of light visible through dispersion.
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