(i) Name one antacid. How does it help to relieve indigestion in stomach?
(ii) A farmer treats the soil with quicklime or calcium carbonate. What is the nature of soil? Why does the farmer treat the soil with quicklime?
i. Name of one antacid is Magnesium
Hydroxide (Milk of magnesia).
During indigestion, our stomach produces too much acid and this causes irritation. Hence, when we take a base it neutralises the effect of the excess acid and relieves us from the irritation and indigestion.
ii. Quicklime or calcium carbonate is basic in nature. Hence, the nature of the soil must be acidic.
Plants grow well in the pH range of 6 – 8. So, when the soil becomes acidic in nature the farmers add bases like quicklime or calcium carbonate to neutralise the excess acid and maintain the pH.