give reason
a) Factory waste is treated with a base before disposing into water bodies.
b) Calamine solution is applied, when an ant bites.
c) An antacid is taken when we feel acidity in our stomach.
d) Soil is treated with an acid or a base before growing plants in an area.
e) Why do we use indicators?
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b) Ant bite contains formic acid. Calamine is basic in nature and thus it helps to neutralize the effect of acid. c) Factory wastes are acidic in nature, these wastes make the water acidic. Acidic water is harmful for aquatic life, hence factory wastes are neutralized before it is disposed into water.
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