An aqueous solution containing zinc chloride is tested by adding reagents. Which observation is the correct one?
- Aacidified aqueous barium nitrate: forms a white precipitate
- Baqueous ammonia: forms a white precipitate, soluble in excess of the reagent
- Caqueous sodium hydroxide: forms a white precipitate, insoluble in excess of the reagent
- Dpowdered copper: forms a grey precipitate