Question

An aqueous film forming foam (AFFF) portable extinguisher is intended for use on what class of fire?

1) Class A fires
2) Class B fires
3) Class C fires
4) Class D fires

Answer 1

An Aqueous Film Forming Foam (AFFF) portable extinguisher is intended for use on Class B fires. AFFF is effective because it forms a film that separates the fuel from the oxygen, extinguishing the fire.

Step-by-step explanation:

An Aqueous Film Forming Foam (AFFF) portable extinguisher is intended for use on Class B fires. Class B fires involve flammable liquids, such as gasoline, oil, and alcohol. AFFF is an effective fire suppressant for these types of fires because it forms a film that separates the fuel from the oxygen, effectively extinguishing the fire.