what happens when direct current is passed through a colloidal sol
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coagulation takes place
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When a light passes through a true solution, containing solute particles of size less than 1 nm, the path of the light is not visible. If the light is passed through a colloidal solution, the path of the light through the.dispersion medium becomes visible due to the scattering of the light. This is the optical property of the colloids.
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