Why is carbon dioxide considered an acidic oxide?
Answer and explanation
Correct answer: It can react with bases to form carbonates
The governing concept is the acidic behaviour of non-metal oxides. Carbon dioxide reacts with bases such as sodium hydroxide: CO₂ + 2NaOH → Na₂CO₃ + H₂O. It can also form carbonic acid with water. Thus option A correctly identifies its reaction with bases. It does not form metals, turn red litmus blue, or represent common salt, so the other options are unsuitable.
Frequently asked questions
What is the correct answer to this question?
It can react with bases to form carbonates
Why is this the correct answer?
The governing concept is the acidic behaviour of non-metal oxides. Carbon dioxide reacts with bases such as sodium hydroxide: CO₂ + 2NaOH → Na₂CO₃ + H₂O. It can also form carbonic acid with water. Thus option A correctly identifies its reaction with bases. It does not form metals, turn red litmus blue, or represent common salt, so the other options are unsuitable.
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.
