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When $H_2S$ is passed through an ammoniacal salt solution X, a white ppt. is obtained. Then X can be a

(a) cobalt salt
(b) nickel salt
(c) manganese salt
(d) zinc salt
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Answer: zinc salt
On passing $H_2S$ through zinc salt solution in the presence of $NH_4OH$, a white or dirty ppt. of ZnS is obtained. The ammoniacal salt is $NH_4OH$ + Zinc salt solution.
answered Feb 1, 2014 by mosymeow_1
edited Feb 1, 2014 by mosymeow_1

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