Chemistry - Salt Analysis Question with Solution | TestHub

Choose the correct code by identifying (X), (Y) and (Z) in each case for the changes indicated

\eqalign{ & (i)\,\,CrO₂Cl₂\mathop {\longrightarrow }\limits^{KOH} (X)\mathop {\xrightarrow[{H₂SO₄}]{conc.}} (Y)\mathop {\xrightarrow[{AgNO₃}]{}} (Z) \cr& (ii)\,\,CrCl₃(aq)\mathop {\xrightarrow[{NaOH}]{excess}} (X)\mathop {\xrightarrow[{H₂O,boil}]{Na₂O₂}} (Y)\mathop {\xrightarrow[{acetate}]{lead}} (Z) \cr& (iii)\,\,ZnSO₄(aq)\mathop {\xrightarrow[{H₂O}]{Na₂CO₃}} (X)\mathop {\xrightarrow[]{\Delta}(Y)} \mathop {\xrightarrow[{\Delta}]{cobalt\,nitrate}} (Z) \cr& (iv)\,\,CuCl₂(aq)\mathop {\xrightarrow[{H₂S}]{NH₄OH}} (X)\mathop {\xrightarrow[\Delta]{HNO₃}} (Y)\mathop {\xrightarrow[{excess}]{KCN}} (Z) \cr}