IFSTA Chapter 18 - Foam Fire Fighting, Liquids Fires, and Gas Fires Test 2023/2024

IFSTA Chapter 18 - Foam Fire Fighting, Liquids Fires, and Gas Fires TestWhat is likely to cause poor quality fire fighting foam to be produced? Select one: a. Nozzle is too far below the eductor b. Nozzle is fully opened c. Mixing different types of foam concentrates in the same tank d. Hose lay on the eductor 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. Select one: a. compressed air foam systems (CAFS) b. fog nozzles c. apparatus-mounted proportioners d. foam nozzles - correct answer b. fog nozzles The rate of application for Class B foam depends on: Select one: a. whether or not the fuel is a surfactant. b. the location of the fuel spill. c. the type of water used to proportion the foam. d. whether the fuel is spilled or contained in a tank. - correct answer d. whether the fuel is spilled or contained in a tank. What is an advantage of using a foam nozzle to apply fire fighting foam? Select one: a. More widely available than a fog nozzle b. More versatile than a fog nozzle c. Produces higher quality foam than a fog nozzle d. Longer reach than other nozzles - correct answer c. Produces higher quality foam than a fog nozzle What is a disadvantage of using fog nozzles to apply fire fighting foam? Select one: a. They are not as versatile as foam nozzles. b. They are specialty nozzles that are not widely available on most apparatus. c. They provide a limited reach compared to other nozzles. d. Operator error is more likely to produce lower quality foam. - correct answer d. Operator error is more likely to produce lower quality foam.