JEE Main 2019ChemistrySurface ChemistryEasyMCQ

JEE Main 2019Surface Chemistry Question with Solution

JEE Main 2019 (09 Jan Shift 2)

Question

For coagulation of arsenious sulphide sol, which of the following salt solutions will be most effective?

Choose an option

Show full solutionCorrect option: C
Correct answer
CAlCl3

Step-by-step explanation

According to Hardy's -schulz rule, greater the valency of the active ion or flocculating ion greater will be its coagulating power. S-2 is -ve charged colloid so cation having more +ve charge, more will be coagulating power.

Hence Al+3 having maximum coagulating power

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About this question

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.