IFSTA Chapter 18 - Foam Fire Fighting, Liquids Fires, and Gas Fires Test fully solved 2024

IFSTA Chapter 18 - Foam Fire Fighting, Liquids Fires, and Gas Fires TestWhat is likely to cause poor quality firefighting foam to be produced? Select one: a. Nozzle is too far below the educator b. Nozzle is fully opened c. Mixing different types of foam concentrates in the same tank d. Hose lay on the educator side is not long enough - correct answer c. Mixing different types of foam concentrates in the same tank Which statement accurately describes pressurized vessels? Select one: a. They should be marked with placards or stickers identifying the contents. b. They must have relief hatches or manholes for easy access to the contents. c. They are color-coded so responders can easily identify the contents. d. They will look the same as vessels used to transport or contain flammable solids. - correct answer a. They should be marked with placards or stickers identifying the contents. Class A foam acts as a surfactant, which means that it: Select one: a. requires a special type of nozzle for application. b. requires a special type of aeriation tool to be formed. c. lowers the surface tension of water, allowing better penetration into the fuel. d. raises the surface tension of water, creating a more effective extinguishing agent. - correct answer c. lowers the surface tension of water, allowing better penetration into the fuel. An advantage of _____ is that they are widely available on most fire apparatus.