| A | B |
|---|
| potassium | most reactive metal in our series |
| gold | least reactive metal in our series |
| zinc+copper sulphate | zinc sulphate + copper |
| copper+zinc sulphate | no reaction |
| lead + iron nitrate | lead nitrate + iron |
| aluminium + lead nitrate | aluminium nitrate + lead |
| magnesium + silver nitrate | magnesium nitrate + silver |
| calcium + magnesium nitrate | calcium nitrate + magnesium |
| sodium + calcium nitrate | sodium nitrate + calcium |
| potassium + sodium chloride | potassium chloride + sodium |
