Propane and butane are examples of Class B fires.

Propane and butane are examples of Class B fires.

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

Answer: (B)

Fires are grouped by what the fuel is. Class B covers flammable liquids and fuels, including flammable gases. Propane and butane burn as fuels, so their fires are classified as Class B. They differ from fires involving ordinary combustibles like wood or paper (which is Class A), electrical equipment (Class C), or combustible metals (Class D). For Class B fires, the goal is to cut off the fuel from the flame or air with agents such as dry chemical powder, foam, or CO2, rather than relying on water, which can spread liquid fuels.

Fires are grouped by what the fuel is. Class B covers flammable liquids and fuels, including flammable gases. Propane and butane burn as fuels, so their fires are classified as Class B. They differ from fires involving ordinary combustibles like wood or paper (which is Class A), electrical equipment (Class C), or combustible metals (Class D). For Class B fires, the goal is to cut off the fuel from the flame or air with agents such as dry chemical powder, foam, or CO2, rather than relying on water, which can spread liquid fuels.