JEE Main 2021 — Surface Chemistry Question with Solution
From: JEE Main 2021 (Online) 26th August Evening Shift
Question
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
When AgNO3 is added to KI,
Iodide ion gets adsorbed on the surface of AgI. This will result in formation of negatively charged colloids.
When KI is added to AgNO3 following reaction takes place.
Silver cation gets adsorbed on surface of AgI, resulting in formation of positively charged colloids.
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This is a previous-year question from JEE Main 2021, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.