Which class extinguisher is for flammable liquids and gases?

Which class extinguisher is for flammable liquids and gases?

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

Answer: (D)

Fires involving flammable liquids and gases require extinguishers labeled for Class B. These extinguishers are designed to blanket or smother the fuel so the flame can’t continue, often using dry chemical powders, foam, or CO2 to separate the fuel from the heat and air. Water is usually not appropriate here because it can spread flammable liquids and make the fire worse. Other extinguisher types target different hazards: one is for ordinary combustibles like wood and paper, another for energized electrical equipment, and another for cooking oils. Since the scenario involves flammable liquids and gases, Class B is the correct choice.

Fires involving flammable liquids and gases require extinguishers labeled for Class B. These extinguishers are designed to blanket or smother the fuel so the flame can’t continue, often using dry chemical powders, foam, or CO2 to separate the fuel from the heat and air. Water is usually not appropriate here because it can spread flammable liquids and make the fire worse. Other extinguisher types target different hazards: one is for ordinary combustibles like wood and paper, another for energized electrical equipment, and another for cooking oils. Since the scenario involves flammable liquids and gases, Class B is the correct choice.