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On addition of aqueous NaOH to a salt solution, white gelatinous precipitate is formed, which dissolves in excess alkali. The salt solution contains
A. Chromium ions
B. Aluminium ions
C. Barium ions
D. Iron ions

1 Answer

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

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