Identify the salts W, X, Y and Z from their uses.
W : Used in medicines and fire extinguishers
X : Used in purification of water
Y : Used in fireworks
Z : Used as a fungicide
| W | X | Y | Z | |
|---|---|---|---|---|
| A | Sodium carbonate |
Potash alum |
Copper sulphate |
Sodium nitrate |
| B | Potassium chloride |
Silver nitrate |
Sodium bicarbonate |
Potassium sulphate |
| C | Potassium nitrate |
Sodium carbonate |
Potash alum |
Sodium chloride |
| D | Sodium bicarbonate |
Potash alum |
Potassium nitrate |
Copper sulphate |