Temporary hardness of water is due to the presence of the sulphates of Ca and Mg. If this is true enter 1, if false enter 0.

The statement is false. Temporary hardness of water is primarily due to the presence of bicarbonates of calcium (Ca) and magnesium (Mg), not their sulfates.

Explanation:
Temporary hardness can be removed by boiling the water, which converts the bicarbonates into carbonates that precipitate out. This is why it’s called temporary hardness.
In contrast, permanent hardness is caused by the presence of sulfates and chlorides of calcium and magnesium, which do not precipitate out upon boiling.
So, the correct answer to enter is 0.