Home Chemistry Surface Chemistry NCERT Generally colloids precipitates on addition …
Chemistry Surface Chemistry NCERT Single Correct MCQ
Published on: August 13, 2026

Generally colloids precipitates on addition of excess of electrolyte because of

A
suppression of double layer
B
increase in zeta potential
C
increase in electrostatic repulsion
D
electrophoresis.

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The correct answer is:
A

The addition of more electrolytes to the solution suppresses the different double layer and reduces and the zeta potential. This deceases the electrostatic repulsion between particles to a larger extent and colloid precipitates.

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