Which class of fire consists of Flammable Liquid?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (B)

Fires are categorized by the type of fuel to tailor extinguishing strategies. The class that involves flammable liquids includes substances like gasoline, solvents, and certain oils that release ignitable vapors. These fires burn rapidly because vapors feed the flame and the liquid can spread the burn if it leaks or splashes. To control them, focus on removing heat or cutting off the vapors' contact with air by using extinguishing agents such as foam, dry chemical powders, or carbon dioxide, which form a barrier or interrupt the flame chemistry. Water is typically avoided for flammable liquid fires because it can spread the liquid and prolong the burn, though cooling exposed containers to prevent heat transfer is sometimes used as a precaution. Other fire types involve ordinary combustibles (wood, paper), energized electrical equipment, or combustible metals, and each requires different extinguishing approaches and agents.