On a class "B" fire, which portable fire...

Question 1 / 2066636eec28f7522a1c51c0d1

Question 1 of 2066636eec28f7522a1c51c0d1

On a class "B" fire, which portable fire extinguisher would be the LEAST desirable?

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Question 1 of 20

66636eec28f7522a1c51c0d1

On a class "B" fire, which portable fire extinguisher would be the LEAST desirable?

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🔍 Key Concepts

• Class "B" fires involve flammable liquids like gasoline, oil, and solvents • Some extinguishers can spread flammable liquids instead of putting them out • Different extinguishing agents work by cooling, smothering, or interrupting the chemical reaction

💭 Think About

• Which extinguisher type might actually spread burning liquid if you spray it directly on the surface? • Which agents are specifically designed to form a blanket over flammable liquids or to smother vapors? • Think about which agent is mainly for ordinary combustibles (wood, paper, cloth) rather than flammable liquids.

✅ Before You Answer

• Confirm what types of fires a water (stored pressure) extinguisher is rated for • Recall that Class B fires are not solid materials but liquids and liquid fuels • Check which agents (foam, dry chemical, CO₂) are commonly recommended for Class B fires and which one is not

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Question 1 of 20

On a class "B" fire, which portable fire extinguisher would be the LEAST desirable?

Water (stored pressure)

Foam

Dry chemical

Carbon dioxide

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