JEE Main 2019 — Surface Chemistry Question with Solution
From: JEE Main 2019 (Online) 9th January Evening Slot
Question
For coagulation of arsenious sulphate sol, which one of the following salt solution will be most effective ?
Choose an option
Show full solutionCorrect option: B
Correct answer
BAlCl3
Step-by-step explanation
Sulphide is ve charged colloid.
As coagulation is directly proportional to the effective charge, so cation with maximum charge will be most effective for coagulation.
Al3+ > Ba2+ > Na+ coagulating power.
As coagulation is directly proportional to the effective charge, so cation with maximum charge will be most effective for coagulation.
Al3+ > Ba2+ > Na+ coagulating power.
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This is a previous-year question from JEE Main 2019, 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.