WBCS.LIVE practice question

Which gas is used in fire extinguishers?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Oxygen
  2. Nitrogen
  3. Helium
  4. Carbon Dioxide

Correct answer and explanation

Correct answer: Carbon Dioxide

Explanation: āœ… Correct Answer: (D) Carbon Dioxide šŸ“š Explanation: Carbon Dioxide (CO2) is used in fire extinguishers because it is non-flammable and heavier than oxygen. When sprayed, it displaces the oxygen surrounding the fire, effectively "suffocating" it. It is particularly effective for electrical fires and flammable liquid fires because it doesn't leave a residue and is non-conductive.