A hand portable CO2 fire extinguisher is...

Question 1 / 2707066636ef028f7522a1c5209f1

Question 1 of 2707066636ef028f7522a1c5209f1

A hand portable CO2 fire extinguisher is effective on burning oil only __________.

Question 1 of 27070

A hand portable CO2 fire extinguisher is effective on burning oil only __________.

🔍 Key Concepts

• CO2 fire extinguisher characteristics on Class B (flammable liquid/oil) fires • How CO2 extinguishes fire: oxygen displacement and limited cooling effect • Differences between CO2, foam, and water fog on oil fires

💭 Think About

• Think about what a CO2 extinguisher actually DOES to a fire and what it does NOT do well (cooling vs smothering). • Which option best matches the conditions under which CO2 will stop a liquid fuel fire before it spreads or flashes back? • Ask yourself: in real practice, when would CO2 alone be enough on a small oil fire without needing another agent?

✅ Before You Answer

• Verify which agent is best for preventing rekindling of hot oil: is it CO2 or foam? • Consider whether CO2 is normally used together with foam or as a stand‑alone agent on small liquid fires. • Remember that CO2 has no lasting blanket on the surface of the fuel; decide which choice lines up with that limitation.

Question 1 of 27070

A hand portable CO2 fire extinguisher is effective on burning oil only __________.

To prevent rekindling

If applied promptly

If applied in connection with foam

If attempts to extinguish the fire with low velocity fog have failed