The metal ion which is precipitated when `H_(2)S` is passed with HCl is

Options

A. `Zn^(2+)`
B. `Ni^(2+)`
C. `Cd^(2+)`
D. `Mn^(2+)`

Explanation

`Cd^(2+)` (from group II of analytical chemistry) gives yellow ppt. of CdS in slightly acidic medium. `Ni^(2+),Zn^(2+)` and `Mn^(2+)` (from group IV of analytical chemistry) gives ppt. only in alkaline medium.