1.

On addition of aqueous NaOH to a salt solution, white gelatinous precipitate is formed, which dissolves in excess alkali. The salt solution contains

Answer»

CHROMIUM ions
Aluminium ions
Barium ions
Iron ions

Solution :`AL^(+3)+(OH^(-))_(3)to UNDERSET(("WHITE ppt."))(Al(OH)_(3)`
Which is soluble in excess alkali.


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