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25 mL of silver nitrate solution (1M) is added dropwise to 25 mL of potassium iodide (1.05 M) solution. The ion(s) present in very small quantity in the solution is/are :

1. I – only
2. K + only
3. NO 3 – only
4. Ag + and I – both

Correct answer: Ag + and I – both

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