JEE Main 2021ChemistrySurface ChemistryEasyMCQ

JEE Main 2021 — Surface Chemistry Question with Solution

JEE Main 2021 (17 Mar Shift 2)

Question

For the coagulation of a negative sol, the species below, that has the highest flocculating power is:

Choose an option

Show full solutionCorrect option: B
Correct answer
BBa2+

Step-by-step explanation

The ion which is responsible for neutralization of charge on the colloidal particles is called the coagulating ion or Flocculating ion. So, according to this rule, greater the charge on an oppositely charged ion, greater is its coagulation power.

To coagulate negative sol, cation with higher charge has higher coagulation value.

So answer is Ba+2

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About this question

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.