Related InterviewSolutions

• The total number of following ions, which interfere with the brown ring test for `NO_(3)^(-)` is/are: `Br^(-),I^(-),CO_(3)^(2-),NO_(2)^(-),CIO_(3)^(-),CrO_(4)^(-2)`
• A sample of sparingly soluble `PbI_(2)(s)` containing radioactive `I-133` is added to `0.10M KI(aq)` and stirred overnight. Observations about this system include which of the following? (P) The radioactivity of the liquid phase increases significantly. (Q) The concentration of the `I^(-)` ion in solution increases significantly.A. P onlyB. R onlyC. Both P and QD. Neither P nor Q
• Among the following compounds insoluble in water is/are: `PbI_(2),HgI_(2),Hg_(2)OCI_(2),NaCI,KI,AgCI`
• Which of the following pairs of ions would be expected to form precipitate when dilute solution are mixed ?A. `Na^(+),SO_(4)^(2-)`B. `NH_(4)^(+),CO_(3)^(2-)`C. `Na^(+),S_(2)^(2-)`D. `Fe^(2+),PO_(4)^(3-)`
• Mark the correct statement:A. I group basic radicals precipitate as chloroidesB. IV group basic radicals precipitates as sulphidesC. V group basic radicals precipitates as carbonatesD. All of the above statements are correct
• The composition of golden spangles isA. `PbCrO_(4)`B. `PbI_(2)`C. `As_(2)S_(3)`D. `BaCrO_(4)`
• Ammonia/ammonium ion gives yellow precipitate with:A. `H_(2)PtCI_(6)`B. `HgCI_(2)`C. `Na_(3)[Co(NO_(2))_(6)]`D. (a) and (c) both
• Among the following, total numbe of reagent(s) which gives yellow precipitate with ammonium chloride solution. `Na_(3)[Co(NO_(2))_(6)], H_(2)[PtCI_(6)], (NaH.C_(4)H_(4)O_(6)), NaCIO_(4), NaOH`
• Select the correct statement with respect to `Fe^(3+)` ions:A. Iron (III) ions reacts with `H_(2)S` in acidic solution to give a black precipitate of `Fe_(2)S_(3)`B. Iron (III) ions react with ammonium sulphide to give the black precipitate of `Fe_(2)S_(3)`C. Iron (III) ions react with ammonium thiocyanate solution to produce deep red colourationD. All of the above
• A mixture of chlorides of copper, cadmium, chromium, iron and aluminium was dissolved in water. It was acidified with dilute `HCI` and then hydrogen sulphide gas was passed for sufficient time. It was filtered, boiled and a few drops of nitric acid were added, while boiling. To this solution, ammonium chloride and ammonium hydroxide were added. To this excess of sodium hydroxide was added and then filtered. The filtrate shall give test for:A. sodium and ironB. sodium, chromium and aluminiumC. aluminium and ironD. sodium, iron, cadmium and aluminium