How does an antacid give relief during excess acidity in the human stomach?
Answer and explanation
Correct answer: By neutralising excess acid
The stomach normally contains hydrochloric acid, which supports digestion, but an excess can irritate the stomach lining and cause discomfort. An antacid contains a mild base, such as a hydroxide, carbonate, or bicarbonate, which reacts with excess hydrochloric acid in a neutralisation reaction. The acidity is reduced rather than strengthened. It does not form chlorine or convert water into acid. Therefore option A correctly explains the relief.
Frequently asked questions
What is the correct answer to this question?
By neutralising excess acid
Why is this the correct answer?
The stomach normally contains hydrochloric acid, which supports digestion, but an excess can irritate the stomach lining and cause discomfort. An antacid contains a mild base, such as a hydroxide, carbonate, or bicarbonate, which reacts with excess hydrochloric acid in a neutralisation reaction. The acidity is reduced rather than strengthened. It does not form chlorine or convert water into acid. Therefore option A correctly explains the relief.
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.
