question_answer 12)

Explain why (a) an antacid tablet is taken when you suffer from acidity. (b) calamine solution is applied on the skin, when an ant bites. (c) factory waste is neutralized before disposing it into the water bodies.  

Answer:

(a) We take an antacid tablet such as milk of magnesia to neutralises the excessive acid released in stomach. (b) When an ant bites, it injects the formic acid into the skin. The effect of acid can be neutralized by applying calamine solution that contains zinc carbonate. (c) The factory wastes contain acids if are allowed to flow into the water bodies and can kill fishes and other organisms. This factory wastes are thus neutralized by adding basic substances.