Zeolite is hydrated sodium aluminium silicate. When treated with hard water,the sodium ions in zeolite are exchanged with

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T$.: $Na\underline{H} + H_2O \longrightarrow NaOH + H_2 \uparrow$

Which of the following is/are considered hard water?

Explain the difference between hard water and soft water.

Temporary hardness of water is due to the presence of:

Describe methods to remove the temporary hardness of water: $(i)$ Boiling $(ii)$ Clark's method.