How does an antacid give relief during stomach irritation due to excess acidity?
Answer and explanation
Correct answer: By neutralising excess acid
Stomach irritation can result when excess hydrochloric acid is present. Antacids contain mild basic substances, such as magnesium hydroxide or other suitable compounds, which react with and neutralise some of this excess acid. The reaction reduces acidity rather than strengthening it; it does not involve producing poisonous carbon monoxide or converting water into acid. Therefore option A correctly expresses the neutralisation principle behind relief from acidity.
Frequently asked questions
What is the correct answer to this question?
By neutralising excess acid
Why is this the correct answer?
Stomach irritation can result when excess hydrochloric acid is present. Antacids contain mild basic substances, such as magnesium hydroxide or other suitable compounds, which react with and neutralise some of this excess acid. The reaction reduces acidity rather than strengthening it; it does not involve producing poisonous carbon monoxide or converting water into acid. Therefore option A correctly expresses the neutralisation principle behind relief from acidity.
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.
