The charge on colloidal particles is due to

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(C) The colloidal particles have a tendency to preferentially adsorb a particular type of ions from the solution. $A$ colloidal particle usually adsor

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adsorption of ions from the solution

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(C) The colloidal particles have a tendency to preferentially adsorb a particular type of ions from the solution. $A$ colloidal particle usually adsorbs those ions which are in excess and are common to its own lattice. This preferential adsorption of a particular type of ions imparts a particular type of charge to colloidal particles. Hence,the correct option is $(C)$.

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