Why is an antacid given when excess acid is produced in the stomach?
Answer and explanation
Correct answer: It neutralises excess acid
The governing concept is acid–base neutralisation. Excess hydrochloric acid in the stomach can cause acidity and irritation. Antacids contain mild bases, such as magnesium hydroxide or suitable carbonate compounds, which react with excess acid and reduce its acidity. Therefore option A is correct. An antacid is not intended to increase acid, convert food into acid, or fill the stomach with hydrogen gas; those statements do not describe its function.
Frequently asked questions
What is the correct answer to this question?
It neutralises excess acid
Why is this the correct answer?
The governing concept is acid–base neutralisation. Excess hydrochloric acid in the stomach can cause acidity and irritation. Antacids contain mild bases, such as magnesium hydroxide or suitable carbonate compounds, which react with excess acid and reduce its acidity. Therefore option A is correct. An antacid is not intended to increase acid, convert food into acid, or fill the stomach with hydrogen gas; those statements do not describe its function.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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