1.

Passing `H_(2)S` gas into a mixture of `Mn^(+2),Ni^(2+),Cu^(2+)` and `Hg^(2+)` ions in an acidified aqueous solution precipitatesA. CuS and HgSB. MnS and CuSC. MnS and NiSD. NiS and HgS

Answer» Correct Answer - A
`Cu^(+2)` and `Hg^(+2)` are II group basic radicals with `H_(2)S` in presence of acid (dil. HCl)
CuS(black),HgS(black)ppt are obtain


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