The questions below refer to the following salt solutions listed A to F:- A: Copper nitrate B: Iron [II] sulphate C: Iron [III] chloride D: Lead nitrate E: Magnesium sulphate F: Zinc chloride. <br> i)  Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution. [i.e. white ppt. insoluble in dil. HCI] <br> ii) Which two solutions will give a white ppt. when treated with dil. `HNO_3`  & `AgNO_3` soln.  <br> iii) Which soln. will give a white ppt. when either dil. HCl or dil. `H_2SO_4` , is added to it.  <br> iv) Which soln. becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it. <br> v) Which solution gives a white precipitate with excess ammonium hydroxide solution. 