Which compounds used to estimate the hardness of water volumetrically ?

Name the compound used to determine the hardness of water.

The reagent commonly used to determine hardness of water titrimetrically is :

The hardness of water is measured by

Name the compound used for measuring the hardness of water, i.e., for estimation of Ca^(2+) and Mg^(2+) ions.

The method used to remove temporary hardness of water is:

What are the types of hardness of water?

The process used for the removal of hardness of water is

Which method is used to estimate carbon and hydrogen ?

The temporary hardness of water is due to :