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Passing H2S gas into a mixture of Cu^(2+...

Passing `H_2S gas into a mixture of `Cu^(2+)`, `Mn^(2+)`, `Ni^(2+)` and `Hg^(2+)` ions, in acidified aqueous solution precipitates

A

CuS and HgS

B

MnS and CuS

C

MnS and NIS

D

NIS and HgS

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The correct Answer is:
A
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