Passing H₂S gas into a mixture of Mn²⁺, Ni²⁺, Cu²⁺ and Hg²⁺ ions in an acidified aqueous solution precipitates (a) CuS and HgS (b) MnS and CuS(c) MnS and NiS (d) NiS and HgS
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(a) option is correct.. CuS and HgS
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