(C) The $V^{-}A$ group (Group $15$ in modern $IUPAC$,but traditionally Group $V$ in qualitative analysis) contains $Bi^{3+}$.When the black precipitat

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(C) The $V^{-}A$ group (Group $15$ in modern $IUPAC$,but traditionally Group $V$ in qualitative analysis) contains $Bi^{3+}$.When the black precipitate of $Bi_2S_3$ is dissolved in $50\% \ HNO_3$,it forms $Bi(NO_3)_3$.Upon adding an excess of $NH_4OH$ to this solution,a white precipitate of $Bi(OH)_3$ is obtained.Therefore,the correct option is $(C)$.

Class 12 Chemistry Principles Related to Practical Chemistry Wet Test for Basic Radical

Medium

The $V^{-}A$ group precipitate was dissolved in $HNO_3$ and treated with an excess of $NH_4OH$. It gives a white precipitate because of:

A
$Cu(OH)_2$
B
$Cd(OH)_2$
C
$Bi(OH)_3$
D
$Hg(OH)_2$

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Wet Test for Basic Radical

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The $V^{-}A$ group precipitate was dissolved in $HNO_3$ and treated with an excess of $NH_4OH$. It gives a white precipitate because of:

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