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Question
The correct option among the following is:
Options
Addition of alum to water makes it unfit for drinking.
Colloidal medicines are more effective because they have small surface area.
Colloidal particles in lyophobic sols can be precipitated by electrophoresis.
Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.
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Solution
Colloidal particles in lyophobic sols can be precipitated by electrophoresis.
Explanation:
In electrophoresis, the charged colloidal particles in lyophobic sols migrate toward the oppositely charged electrode. Upon reaching the electrode, they lose their charge, leading to coagulation (precipitation) of the colloidal particles. This process helps in separating and precipitating the colloidal particles from the sol. Hence, colloidal particles in lyophobic sols can be precipitated by electrophoresis.
