1.

Which of the following forms black ppt. with H_(2)S in acidified solution?

Answer»

`Mg^(2+)`
`Na^(+)`
`Cd^(2+)`
`Zn^(2+)`

SOLUTION :Sulphidesof salts gives BLACK ppt in acidic medium are HgS, CUS, PbS, `Na_(2)S` etc.


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