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JEE Main202126 Aug 2021Evening ShiftChemistrySurface ChemistryActual

The sol given below with negatively charged colloidal particles is:

Options

  1. AAgNO 3 added to KI solution
  2. BKI added to AgNO 3 solution
  3. CAl 2 O 3 · x H 2 O in water
  4. DFeCl 3 added to hot water

Correct answer

A. AgNO 3 added to KI solution

Step-by-step solution

1 FeCl 3 added to hot water, ( 2 ) When AgNO 3 is added to KI , ( 3 ) When Kl is added to AgNO 3 , 4 Al 2 O 3 · 2 H 2 O in water Al OH 3 / Al 3 + positively charged

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