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On addition of aqueous NaOH to a salt so...

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

A

Chromium ions

B

Aluminium ions

C

Barium ions

D

Iron ions

Text Solution

Verified by Experts

The correct Answer is:
B
`Al^(+3)+(OH^(-))_(3)to underset(("white ppt."))(Al(OH)_(3)`
Which is soluble in excess alkali.
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