An antacid taken for excess stomach acid works on which principle?
Answer and explanation
Correct answer: Neutralisation
Excess hydrochloric acid in the stomach can cause irritation and a burning sensation. An antacid contains a mild base, such as a suitable hydroxide, carbonate, or bicarbonate, which reacts with the excess acid. The acid-base reaction reduces acidity and forms salt, water, and sometimes carbon dioxide. This process is called neutralisation, so option C is correct; the other choices are physical processes or unrelated effects.
Frequently asked questions
What is the correct answer to this question?
Neutralisation
Why is this the correct answer?
Excess hydrochloric acid in the stomach can cause irritation and a burning sensation. An antacid contains a mild base, such as a suitable hydroxide, carbonate, or bicarbonate, which reacts with the excess acid. The acid-base reaction reduces acidity and forms salt, water, and sometimes carbon dioxide. This process is called neutralisation, so option C is correct; the other choices are physical processes or unrelated effects.
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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