🔍 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