Considering carbon dioxide as a non-metal oxide, why does it react with lime water?
Answer and explanation
Correct answer: Because it is an acidic oxide
The governing concept is the reaction between acidic and basic oxides. Carbon dioxide is a non-metal oxide with acidic character, while lime water contains calcium hydroxide, a base. They react as CO₂ + Ca(OH)₂ → CaCO₃ + H₂O, producing a white precipitate that makes lime water milky. Therefore option A is correct. Carbon dioxide is not a metal, basic oxide, or neutral salt.
Frequently asked questions
What is the correct answer to this question?
Because it is an acidic oxide
Why is this the correct answer?
The governing concept is the reaction between acidic and basic oxides. Carbon dioxide is a non-metal oxide with acidic character, while lime water contains calcium hydroxide, a base. They react as CO₂ + Ca(OH)₂ → CaCO₃ + H₂O, producing a white precipitate that makes lime water milky. Therefore option A is correct. Carbon dioxide is not a metal, basic oxide, or neutral salt.
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.
