1.

Which one of the following substance gives a positively charged sol?A. goldB. A metal sulphideC. ferric hydroxideD. An acidic dye

Answer» Correct Answer - C
In `FeCl_(3)` is added to excess of hot water positively charged sol ferreic hydroxide is formed due to adsorption of `Fe^(+3)` ions.
`Fe(OH)_(3)//Fe^(+3)`
Positively charged sol.


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