1. An iron rod is kept for some time in a beaker containing hydrated copper [II] sulfate (cupric sulfate) solution. The color change observed in the hydrated copper [II] sulfate solution is ...   from green to blue   from green to brown   from blue to green   Hint Half-n-half Clue   2. The reason for the color change is ...   that the water content in the hydrated copper [II] sulfate solution has reduced   that the iron has diffused into the hydrated copper [II] sulfate solution   that the element iron present in the rod has taken the place of the element copper present in the hydrated copper [II] sulfate solution   Half-n-half Clue   3. The deposition observed on the iron rod is ...   iron   sulfur   copper   Half-n-half Clue   4. A balanced equation for this chemical reaction is ...   Fe + Cu2SO4 → FeSO4 + 2 Cu   Fe + CuSO4 → FeSO4 + Cu   2 Fe + 3 CuSO4 → Fe2(SO4)3 + 3 Cu   Half-n-half Clue   5. The type of chemical reaction that has taken place is called a ...   simple displacement reaction   direct combination reaction   double decomposition reaction   Half-n-half Clue   6. Potassium chloride solution is added to silver [I] nitrate (argentous nitrate) solution in the beaker. The beaker is kept for some time. The new precipitate formed in the beaker is ...   Silver [I] chloride   Silver [I] nitrate   Potassium nitrate   Half-n-half Clue   7. The color of this new precipitate as observed is ...   purple   white   grey   Half-n-half Clue