Adsorption of negative ion on the surface of colloidal particles gives rise to
Negatively charged sol
Positively charged sol
Precipitation
None of these
As we have learnt,
Charge on a colloidal solution is due to the preferential adsorption of ions from the solution. Adsorption of negative ion on surface of the colloidal particle gives rise to a negatively charged sol.
Therefore, the option number (1) is correct.
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