Question

(a) Mention the pH range within which our body works. Explain how antacids

give relief from acidity. Write the name of one such antacid.

(b) Fresh milk has a pH of 6. How does the pH will change as it turns to curd? Explain your answer.​

Answer 1

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▶️(a) Our stomach has pH equal to 2. Antacids neutralizes excess of acid in our body and gives relief from hyperacidity. Sodium hydrogencarbonate is one of such antacid.

▶️(b) pH will decrease as it turns to curd because curd is acidic due to the presence of lactic acid.

Answer 2

Explanation:

During indigestion, stomach produces too much acid which causes pain. Antacids are alkaline and so neutralize the excess acid. 1 Milk of Magnesia is an antacid.

(b) The pH will decrease. The milk when changes to curd becomes more acidic. Lesser the pH value, more is the acidic nature.

(c) So that milk does not get spoilt / sour / change into curd.