Ch 18 IFSTA Quiz Clearly Answered 2024.

Ch 18 IFSTA Quiz Clearly Answered 2024.Which type of nozzle produces high quality foam by inducting air into the foam solution using the Venturi Effect? - correct answer Foam nozzle What is a BLEVE? - correct answer Catastrophic failure of a pressurized vessel What is needed to create finished foam? - correct answer Foam concentrate, water, and aeration Which type of foam is used to extinguish fires involving flammable and combustible liquids - correct answer Class B foam When fire fighting foam extinguishes by _____, it prevents air from reaching the fuel and prevents release of flammable vapors. - correct answer smothering When approaching a fire involving a pressurized flammable gas,: - correct answer there is no angle from which it is safest to approach. Which type of liquid fuels have a flash point of less than 100°F (38°C)? - correct answer Flammable liquids At an incident involving a flammable gas fire, firefighters should retreat to a safe location: - correct answer when the sound of gas escaping the relief valve gets louder. Which statement describes the valve control on pressurized vessels? - correct answer Closing the valve without understanding the system can be very dangerous. Why are propane tanks an extreme risk to firefighters? - correct answer The tanks will explode when sufficiently heated.