Answers
Explanation:
5) if the soil is too acidic (having low PH) then it is treated with materials like quicklime (calcium Oxide) or slaked lime (calcium hydroxide) aur Chalk (calcium carbonate). all these materials are bases and hence react with excess acid present in the soil and reduce its acidity. does farmers should at LINE for slaked lime or chalk any field when does soil is too acidic.
6)
(a) the pH plays an important role in the survival of animals including human beings our body works well billion and narrow pH range of 7.0-7.8. Eid due to some reasons this pH range gets disturbed in the body of a person then many ailments can occur. the aquatic animals can survive in lake or river within a narrow range of PH. when the pH of rainwater is about 5.6 it is called acid rain. too much acid rain can lower the pH of Lake water or river water to such an extent that the survival of aquatic animals becomes difficult. this high acidity of Lake water or river water can even kill the aquatic animals. calcium carbonate is often added to acetic Lake water to neutralize the acid that comes from acid rain. this prevents the fish in the lake from being killed.
(b) Sorry.....didn't got the solution