IFSTA CHAPTER 18 Exam 2025 Questions
and Answers
Which is an appropriate safe action to take at an incident involving a BLEVE?
Select one:
a.Apply fire fighting foam at a close range
b.Approach the vessel at the ends of the tank
c.Fight fire from the maximum distance possible
d.Attempt to open the vessel's pressure relief valve - ANS c.Fight fire from the maximum
distance possible
In order to create high-quality foam:
Select one:
a.foam concentrate, water, and air must be mixed in the correct ratio.
b.a foam nozzle must be used.
c.a fog nozzle must be used.
d.foam solution and water must be premixed and allowed to rest before application. -
ANS a.foam concentrate, water, and air must be mixed in the correct ratio.
What action should be taken if a pressurized vessel containing flammable gas is exposed to
flames?
Select one:
a.Apply a fog stream of water
b.Apply foam using the roll-on method
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, c.Apply foam using the bank-down method
d.Apply a solid stream of water - ANS d.Apply a solid stream of water
Which method of foam application would be well suited for a flammable liquid spill near the
exterior wall of a building?
Select one:
a.Spread-over method
b.Rain-down method
c.Roll-on method
d.Bank-down method - ANS d.Bank-down method
Class B foams are especially effective on:
Select one:
a.hydrocarbon fuels.
b.energized electrical equipment.
c.surfactants.
d.ordinary combustibles. - ANS a.hydrocarbon fuels.
Class A foam acts as a surfactant, which means that it:
Select one:
a.requires a special type of aeriation tool to be formed.
b.raises the surface tension of water, creating a more effective extinguishing agent.
c.requires a special type of nozzle for application.
d.lowers the surface tension of water, allowing better penetration into the fuel. -
ANS d.lowers the surface tension of water, allowing better penetration into the fuel.
What is likely to cause poor quality fire fighting foam to be produced?
Select one:
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and Answers
Which is an appropriate safe action to take at an incident involving a BLEVE?
Select one:
a.Apply fire fighting foam at a close range
b.Approach the vessel at the ends of the tank
c.Fight fire from the maximum distance possible
d.Attempt to open the vessel's pressure relief valve - ANS c.Fight fire from the maximum
distance possible
In order to create high-quality foam:
Select one:
a.foam concentrate, water, and air must be mixed in the correct ratio.
b.a foam nozzle must be used.
c.a fog nozzle must be used.
d.foam solution and water must be premixed and allowed to rest before application. -
ANS a.foam concentrate, water, and air must be mixed in the correct ratio.
What action should be taken if a pressurized vessel containing flammable gas is exposed to
flames?
Select one:
a.Apply a fog stream of water
b.Apply foam using the roll-on method
Pg. 1 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
, c.Apply foam using the bank-down method
d.Apply a solid stream of water - ANS d.Apply a solid stream of water
Which method of foam application would be well suited for a flammable liquid spill near the
exterior wall of a building?
Select one:
a.Spread-over method
b.Rain-down method
c.Roll-on method
d.Bank-down method - ANS d.Bank-down method
Class B foams are especially effective on:
Select one:
a.hydrocarbon fuels.
b.energized electrical equipment.
c.surfactants.
d.ordinary combustibles. - ANS a.hydrocarbon fuels.
Class A foam acts as a surfactant, which means that it:
Select one:
a.requires a special type of aeriation tool to be formed.
b.raises the surface tension of water, creating a more effective extinguishing agent.
c.requires a special type of nozzle for application.
d.lowers the surface tension of water, allowing better penetration into the fuel. -
ANS d.lowers the surface tension of water, allowing better penetration into the fuel.
What is likely to cause poor quality fire fighting foam to be produced?
Select one:
Pg. 2 Copyright © 2025 Jasonmcconell. ALL RIGHTS RESERVED.
