Class B extinguishers are for flammable liquids and gases like propane and butane.

Class B extinguishers are for flammable liquids and gases like propane and butane.

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

Answer: (C)

Fires are categorized by the fuel involved, so the extinguisher you choose must match that fuel. Propane and butane are flammable liquids and gases, which creates a Class B fire. The aim is to smother the flame and block the fuel from the air or interrupt the flame chemistry, which is best achieved with agents like foam, dry chemical powders, or carbon dioxide. Water is avoided on these fires because it can spread the flammable liquid and make the fire worse. Other fire types protect different hazards: ordinary combustibles need different approaches, electrical fires require non-conductive extinguishers, and metal fires need specialized powders. So for flammable liquids and gases such as propane and butane, a Class B extinguisher is the appropriate choice.

Fires are categorized by the fuel involved, so the extinguisher you choose must match that fuel. Propane and butane are flammable liquids and gases, which creates a Class B fire. The aim is to smother the flame and block the fuel from the air or interrupt the flame chemistry, which is best achieved with agents like foam, dry chemical powders, or carbon dioxide. Water is avoided on these fires because it can spread the flammable liquid and make the fire worse. Other fire types protect different hazards: ordinary combustibles need different approaches, electrical fires require non-conductive extinguishers, and metal fires need specialized powders. So for flammable liquids and gases such as propane and butane, a Class B extinguisher is the appropriate choice.