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Pranab Rahim Trivedi
Asked: 2022-11-06T10:34:23+05:30 In:

Passing `H_(2)S` gas into a mixture of `Mn^(+2),Ni^(2+),Cu^(2+)` and `Hg^(2+)` ions in an acidified aqueous solution precipitates
A. CuS and HgS
B. MnS and CuS
C. MnS and NiS
D. NiS and HgS

Passing `H_(2)S` gas into a mixture of `Mn^(+2),Ni^(2+),Cu^(2+)` and `Hg^(2+)` 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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1 Answer

  1. 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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