A sample of water from a river was analyzed for the presence of metal ions and the observations were recorded as given below `{:("Reagent added","Observation"),("dil. HCl","No change"),("aq. " Na_(2)CO_(3),"White precipitate"),("Aq. " Na_(2)SO_(4),"No change"):}` The water sample is likely to containA. `Ba^(2+)`B. `Cu^(2+)`C. `Li^(+)`D. `Mg^(2+)`

A sample of water from a river was analyzed for the presence of metal

1.	A sample of water from a river was analyzed for the presence of metal ions and the observations were recorded as given below `{:("Reagent added","Observation"),("dil. HCl","No change"),("aq. " Na_(2)CO_(3),"White precipitate"),("Aq. " Na_(2)SO_(4),"No change"):}` The water sample is likely to containA. `Ba^(2+)`B. `Cu^(2+)`C. `Li^(+)`D. `Mg^(2+)`
Answer» Correct Answer - D

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