Which of the following methods can be used to remove temporary hardness from water?
-
Boiling
- Filtration
- sedimentation
- Chlorination
The correct answer is: A
Explanation
Temporary hardness in water can be removed by boiling. When water is boiled, the calcium and magnesium bicarbonates decompose, forming insoluble calcium carbonate (CaCO3) and magnesium carbonate (MgCO3), which precipitate out of the water.
There is an explanation video available .