A sol is prepared by addition of excess of \( \mathrm{AgNO}_{3} \) solution in \( \mathrm{KI} \)...

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A sol is prepared by addition of excess of \( \mathrm{AgNO}_{3} \) solution in \( \mathrm{KI} \) solution. The charge likely to develop on colloidal particles is:
(a) positive
(b) negative
(c) no charge
(d) both charges
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