PRACTICE EXAM 2026 QUESTIONS WITH
ANSWERS 100% PASS
⩥ Foam % Answer: Class A materials 0.1 to 1%
Class B materials 3-6%
⩥ Foam Application Answer: -Roll-on is used for a burning liquid spill
-Bank-Down is used when an elevated object is near a burning pool of
liquid
-Rain-Down is used when the other two methods are not feasible and on
above ground storage tanks
⩥ Class A foam Answer: Foam specially designed for use on Class A
combustibles. Class A foams, hydrocarbon-based surfactants are
essentially wetting agents that reduce the surface tension of water and
allow it to soak into combustible materials more easily than plain water.
⩥ Class B foam Answer: Foam fire-suppression agent designed for use
on unignited or ignited Class B flammable or combustible liquids.
, ⩥ AFFF (Aqueous Film Forming Foam) Answer: Used as either 1%,
3%, or 6%
⩥ Which foam should be used for polar solvents? Answer: Alcohol
resistive foam
⩥ define soluability Answer: Ability for substance to dissolve in a
solvent
⩥ What elements are needed to produce firefighting foam? Answer:
Suction, 200psi, eductor, up to 150' after eductor
⩥ Air aspirating foam nozzle Answer: They can be designed to bring the
air into either the front or the back of the nozzle. Air is drawn into the
nozzle through the Venturi effect. As the foam solution passes through
the center of the nozzle, a low level of pressure is created, which allows
the air to enter the nozzle. This process consumes energy. The more air
that's drawn in, the more energy is consumed. This causes a reduction in
stream reach.
⩥ BLEVE stands for Answer: Boiling Liquid Expanding Vapor
Explosion
⩥ Combination Attack Answer: Extinguishing a fire by using both a
direct and an indirect attack. This method combines the steam-