A Class B fire involves which type of fuel?

A Class B fire involves which type of fuel?

• A. Flammable liquids
• B. Ordinary combustibles
• C. Energized electrical equipment
• D. Combustible metals

Answer: (A)

Fires that involve flammable liquids are categorized as Class B because the fuel is a liquid that forms flammable vapors capable of sustaining the flame. This makes the correct choice Flammable liquids. Common examples include gasoline, solvents, oils, and paint thinners. Understanding this classification helps you choose the right extinguishing approach—Class B fires are best tackled with agents that form a barrier on the liquid surface (like foam, certain dry chemical powders, or CO2) and that do not spread the liquid. Fires involving ordinary combustibles (wood, paper, textiles) fall under another class, Class A. Fires from energized electrical equipment are Class C, and fires involving combustible metals are Class D.

Fires that involve flammable liquids are categorized as Class B because the fuel is a liquid that forms flammable vapors capable of sustaining the flame. This makes the correct choice Flammable liquids. Common examples include gasoline, solvents, oils, and paint thinners. Understanding this classification helps you choose the right extinguishing approach—Class B fires are best tackled with agents that form a barrier on the liquid surface (like foam, certain dry chemical powders, or CO2) and that do not spread the liquid.

Fires involving ordinary combustibles (wood, paper, textiles) fall under another class, Class A. Fires from energized electrical equipment are Class C, and fires involving combustible metals are Class D.