Explanation:

pH plays a very important role in our everyday life. 1. In our digestive system :Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach. But when the amount of the acid goes beyond a certain limit due to indigestion, pain and irritation are created in the stomach. Always carry chemicals in approved containers. Always wash your hands after using any unsafe material. Store materials properly, as directed on their labels. Flammable chemicals should be stored in a cool, dry place away from heat and sunlight.