The most effective way of applying carbon...

Question 1 / 270705eccef9ebacbc34ba4d46389

Question 1 of 270705eccef9ebacbc34ba4d46389

The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.

Question 1 of 27070

The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.

🔍 Key Concepts

• How CO₂ extinguishers work (do they cool, smother, or remove fuel?) • Where a fire actually sustains itself (flame tips versus base of the fire) • Proper sweeping technique with portable extinguishers

💭 Think About

• Think about which part of the fire triangle CO₂ mainly affects and where you need to apply it to be most effective. • Consider whether CO₂ is heavier or lighter than air and how that affects where you should aim the discharge. • Compare a quick blast in one spot versus a controlled, side-to-side motion—what gives better coverage of the burning material?

✅ Before You Answer

• Verify which option focuses on the fuel surface rather than just the visible flames. • Check which method keeps the CO₂ on the fire long enough to smother it instead of letting it quickly disperse. • Eliminate any choice that relies on the agent bouncing off surfaces rather than being applied directly to the burning area.

Question 1 of 27070

The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.

forming a cloud cover over the flames

discharging the carbon dioxide to the top of the flame

directing the carbon dioxide at the base of the flame in a slow sweeping motion

bouncing the discharge off an adjacent bulkhead just above the burning surface

Question 1 / 270705eccef9ebacbc34ba4d46389

Question 1 of 270705eccef9ebacbc34ba4d46389

The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.

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Question 1 of 27070

The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by __________.