Which reaction shows the reaction between an acidic oxide and a base?
Answer and explanation
Correct answer: Carbon dioxide and calcium hydroxide
The governing concept is neutralisation between an acidic oxide and a base. Carbon dioxide, CO₂, is an acidic oxide, while calcium hydroxide, Ca(OH)₂, is a base. They react as CO₂ + Ca(OH)₂ → CaCO₃ + H₂O, producing calcium carbonate and water. Thus option A directly represents the required reaction. The other choices show metal–water, metal–acid, and combination reactions, not acidic oxide–base neutralisation.
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What is the correct answer to this question?
Carbon dioxide and calcium hydroxide
Why is this the correct answer?
The governing concept is neutralisation between an acidic oxide and a base. Carbon dioxide, CO₂, is an acidic oxide, while calcium hydroxide, Ca(OH)₂, is a base. They react as CO₂ + Ca(OH)₂ → CaCO₃ + H₂O, producing calcium carbonate and water. Thus option A directly represents the required reaction. The other choices show metal–water, metal–acid, and combination reactions, not acidic oxide–base neutralisation.
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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