Assertion:- Softening of hard water is done by using sodium aluminium silicate (Zerolitre).
Reason:- Adsorption of `Ca^(2+)` and `Mg^(2+)` ions of hard water replacing `Al^(+3)` ions of zeolite.

Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes

Softening of hard water is done using sodium aluminium silicate (zeolite) . This causes

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

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

Assertion : Calgon is used in manufacture of soft water being used for laundry purpose. Reason : Ca^(2+) and Mg^(2+) ions present in hard water are rendered ineffective by calgon forming their soluble complexes.

Asseriton : Hard Water is not fit for washing clothes. Reason : It contains Ca^(+2) & Mg^(+2) ion which can forms ppt with soap & detergents.

When zeolite (hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with: