$H_{2} S$ gas, on passing through an alkaline solution, forms a white precipitate. The solution contains ions of :

P b

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Z n

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C u

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N i

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Solution

The correct option is B $Z n$
Option (B) is correct.
$H_{2} S$ gas, on passing through an alkaline solution, forms a white precipitate. The solution contains ions of $Z n$ .
$P b$ , $C u$ and $N i$ forms a black precipitate.

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