Question

list two materials which can be added to reduce its acidity give reason​

Answer 1

Bases must be added to acidic substances to reduce its acidity. The process when a base reacts with an acid to form a neutral salt is called neutralisation.

A strong base must be added to strong acid to neutralise it and a weak base must be added to weak acid to neutralise it.

Sodium Hydroxide and Potassium Hydroxide are two strong bases.