What type of fire involves flammable liquids?

A Class B fire involves flammable liquids, which include substances like gasoline, oil, paint, and solvents. These materials can produce vapors that ignite easily when exposed to an ignition source, which is why extinguishing them requires specific methods and agents. For example, water is ineffective on Class B fires, as it can spread the fire by causing the flammable liquid to float, thus exacerbating the situation. Instead, foam, dry chemical agents, and CO2 extinguishers are suitable for such fires, as they can smother the flames and prevent re-ignition. Understanding the nature of Class B fires is essential for effective firefighting and safety measures in dealing with flammable liquids.