p-Block elementsHard

Question

In lake test of  Al3+ ion, there is formation of coloured floating. It is due to :

Options

A.Absorption of litmus by H2O
B.fact-Adsprption of litmus by Al(OH)3
C.adsorption of litmus by Al (OH)4
D.none of these

Solution

In lake test of Al3+, a coloured floating lake is formed as Al(OH)3 which being a solid surface (suspension), adsorbs litmus colour, resulting in coloured floating lake appearance.

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