How does carbon dioxide produced in a soda-acid fire extinguisher help put out fire?
Answer and explanation
Correct answer: It covers the fire and reduces oxygen supply
The governing concept is the fire triangle: combustion needs fuel, heat, and oxygen. Carbon dioxide is denser than air and does not support combustion, so it spreads over the burning material and displaces or limits the oxygen reaching the flame. Removing oxygen interrupts combustion, making option A correct. It does not strengthen fire, convert fuel into acid, or burn water.
Frequently asked questions
What is the correct answer to this question?
It covers the fire and reduces oxygen supply
Why is this the correct answer?
The governing concept is the fire triangle: combustion needs fuel, heat, and oxygen. Carbon dioxide is denser than air and does not support combustion, so it spreads over the burning material and displaces or limits the oxygen reaching the flame. Removing oxygen interrupts combustion, making option A correct. It does not strengthen fire, convert fuel into acid, or burn water.
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.
