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Analytical Test - 4

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Analytical Test - 4
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  • Question 1
    4 / -1
    In the analysis of basic radicals, NH4OH and NH4Cl give precipitate with
  • Question 2
    4 / -1
    Out of Cu2+ , Ni2+ , CO2+ and Mn2+, which is dissolved when H2S is passed through it in the presence of dil. HCl ?
  • Question 3
    4 / -1
    The only cations present in a slightly acidic solution are Fe3+ , Zn2+ and Cu2+ . The reagent that when added in excess to this solution would identify and separate Fe3+ in one step is
  • Question 4
    4 / -1
    The dark blue colour of the solution formed when excess of ammonia is added to a solution of copper (II) sulphate is due to the presence of the ion
    Solution

  • Question 5
    4 / -1
    A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitate. The metal ion is
  • Question 6
    4 / -1
    Prussian blue is obtained by mixing together aqueous solution of Fe3+ salt with
  • Question 7
    4 / -1
    A solution when diluted with H2O and boiled, it gives a white precipitate. On addition of excess NH4Cl/NH4OH, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which dissolves in NH4OH/NH4Cl.
  • Question 8
    4 / -1
    CuSO4 decolourises on addition of KCN, the product is
  • Question 9
    4 / -1
    Copper sulphate solution, when added to an excess of ammonium hydroxide, forms a complex compound due to
  • Question 10
    4 / -1
    A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI convert into orange colour solution. The cation of metal nitrate is
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