Which pair is a correct daily-life example of neutralisation?
Answer and explanation
Correct answer: Use of antacid in acidity
The governing concept is neutralisation, in which an acid reacts with a base to form salt and water, often with heat release. Excess hydrochloric acid in the stomach causes acidity, while a mild basic antacid reacts with and reduces that acid. Dissolving sugar is not an acid-base reaction, and drying cloth or melting ice are physical changes. Therefore using an antacid for acidity is the valid daily-life example, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
Use of antacid in acidity
Why is this the correct answer?
The governing concept is neutralisation, in which an acid reacts with a base to form salt and water, often with heat release. Excess hydrochloric acid in the stomach causes acidity, while a mild basic antacid reacts with and reduces that acid. Dissolving sugar is not an acid-base reaction, and drying cloth or melting ice are physical changes. Therefore using an antacid for acidity is the valid daily-life example, so option A is correct.
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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