An aqueous solution of a mixture of two inorganic salts, when treated with dilute `HCl`, gave a precipitate `(P)` and a filtrate `(Q)`.The precipitate `P` was found to dissolve in hot water. The filtrate `(Q)` remained unchanged, when treated with `H_(2)S` in a dilute mineral acid medium. However, it gave a precipitate `(R)` with `H_(2)S` in an ammoniaca medium.The precipitate `R` gave a coloured solution `(S)`, when treated with `H_(2)O_(2)` in an aqueous `NaOH` medium. The coloured solution `S` containsA. `Fe_(2)(SO_(4))_(3)`B. `CuSO_(4)`C. `ZnSO_(4)`D. `Na_(2)CrO_(4)`

An aqueous solution of a mixture of two inorganic salts, when treated

1.	An aqueous solution of a mixture of two inorganic salts, when treated with dilute `HCl`, gave a precipitate `(P)` and a filtrate `(Q)`.The precipitate `P` was found to dissolve in hot water. The filtrate `(Q)` remained unchanged, when treated with `H_(2)S` in a dilute mineral acid medium. However, it gave a precipitate `(R)` with `H_(2)S` in an ammoniaca medium.The precipitate `R` gave a coloured solution `(S)`, when treated with `H_(2)O_(2)` in an aqueous `NaOH` medium. The coloured solution `S` containsA. `Fe_(2)(SO_(4))_(3)`B. `CuSO_(4)`C. `ZnSO_(4)`D. `Na_(2)CrO_(4)`
Answer» Correct Answer - D

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When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous `NaCl` to the blue solution gives a white precipitate O. Addition of aqueous `NH_(3)` dissolves O and gives an intense blue solution. The final solution containsA. `[Pb(NH_(3))_(4)]^(2+)` and `[CoCl_(4)]^(2-)`B. `[Al(NH_(3))_(4)]^(3+)]` and `[Cu(NH_(3))_(4)]^(2+)`C. `[Ag(NH_(3))_(2)]^(+)` and `[Cu(NH_(3))_(4)]^(2+)`D. `[Ag(NH_(3))_(2)]^(+)` and `[Ni(NH_(3))_(6)]^(2+)`
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To a metal nitrate, when KI solution is added, a black precipitate is produced at first , on additing excess of KI, orange solution is produced. Identify the meatl ionA. `Hg^(2+)`B. `Bi^(3+)`C. `Cu^(2+)`D. `Pb^(2+)`
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