Which of the following ions will give black ppt. with `H_2S` in an acidic solution ?
Which of the following ions will give black ppt. with `H_2S` in an acidic solution ?
A. `Cu^(2+)`
B. `Sn^(2+)`
C. `Pb^(2+)`
D. `Zn^(2+)`
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Correct Answer - B::C
`Cu^(2+) and Pb^(2+)` give black ppt. with `H_2S` in acidic medium
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