1.

The ion that cannot be precipitated by both HCl and `H_2 S` isA. `Pb^(2+)`B. `Cu^+`C. `Ag^+`D. `Sn^(2+)`

Answer» Correct Answer - D
(A)(B)(C )can be precipitated by HCl as well as `H_2S` as their insoluble chlorides and sulphides respectively.
(D)`Sn^(2+)+2HCl toSnCl_2`(soluble)+`2H^+` . It can be precipitated only by `H_2S` as its insoluble sulphide (brown).


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