Assertion :When KI solution is added to $A g N O_{3}$ solution, negatively charged sol results. Reason: Negative charge of sol is due to preferential adsorption of iodide ions from the dispersion medium.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
When $K I$ is added to $A g N o_{3}$ , a positive Sol of $A g I$ will form ( $A g^{+}$ will be preferred). This happens due to adsorption of $A g^{+}$ ions from the dispersion medium on the precipitate of silver iodide.

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Assertion :When KI solution is added to AgNO3 solution, negatively charged sol results. Reason: Negative charge of sol is due to preferential adsorption of iodide ions from the dispersion medium.

The correct option is D Both Assertion and Reason are incorrectWhen KI is added to AgNo3, a positive Sol of AgI will form (Ag+ will be preferred). This happens due to adsorption of Ag+ ions from the dispersion medium on the precipitate of silver iodide.

Assertion :When KI solution is added to $A g N O_{3}$ solution, negatively charged sol results. Reason: Negative charge of sol is due to preferential adsorption of iodide ions from the dispersion medium.

The correct option is D Both Assertion and Reason are incorrect
When $K I$ is added to $A g N o_{3}$ , a positive Sol of $A g I$ will form ( $A g^{+}$ will be preferred). This happens due to adsorption of $A g^{+}$ ions from the dispersion medium on the precipitate of silver iodide.