Multiple choice general knowledge science & technology

What should not be used to fill a fire extinguisher?

  1. Water

  2. Carbondioxide

  3. Nitrogen

  4. Oxygen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oxygen should NEVER be used in a fire extinguisher because it would intensify combustion rather than suppress it. Fire extinguishers use substances that smother flames (like CO2), cool them (like water), or interrupt chemical reactions (like certain dry chemicals). Adding oxygen is essentially adding fuel, making fires worse.

Keep practicing — related questions