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Chapter Pretests


Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.


1:  What is the material called that is used inside a fire extinguisher to stop the combustion process?
A: Dessicant
B: Extinguishing agent
C: Propellant
D: Reducing agent

2:  What would be an example of an incipient fire?
A: A fire in a wastebasket
B: A small car fully involved
C: A fire confined to the attic and roof of a residence
D: A house fire that has self-vented

3:  What danger is there in using water on a fire involving energized electrical equipment?
A: There is risk of electrocution to the fire fighters involved
B: Many metals explode when energized and contacted by water
C: Water can accelerate electrically charged fires and make them grow
D: These types of fires appear to go out with water but do not cool and almost always re-ignite

4:  How many classes of fire are there?
A: Five
B: Four
C: Three
D: Two

5:  How does water work to put out a fire?
A: It coats the fuel with nitrogen
B: It floods the fire with hydrogen
C: It cuts off the nitrogen to the fire
D: It cools the fuel below its kindling temperature

6:  What is the primary disadvantage of fire extinguishers over hoselines?
A: They are ?one-shot? devices
B: They require more people to operate effectively
C: They do far more collateral damage than a simple hoseline
D: They do nothing to suppress re-ignition

7:  What happens if water is used on a grease fire and it is allowed to penetrate into the burning grease?
A: It does no harm, but neither does it do any good
B: It causes a volcanic eruption of the grease
C: It produces a sub-surface steam wave which extinguishes the fire neatly
D: It caused the grease to congeal, turning it into a class C fire

8:  How much heat, if any, can electricity generate?
A: A tremendous amount of heat
B: Enough to burn the skin, but not enough to ignite paper
C: Enough to feel warm, but not enough to burn the skin
D: No actual heat at all, though it feels like it when shocked

9:  What may happen if water is applied to a burning combustible metal?
A: The fire goes out immediately, but evolves hydrogen chromate, a poisonous gas
B: Nothing changes and the fire keeps burning
C: The fuel turns to powder but keeps burning
D: A violent reaction may occur

10:  How large can portable fire extinguishers be?
A: Up to a pound
B: Up to fifteen pounds
C: Up to one hundred pounds
D: Up to several hundred pounds

Optional: Enter your name and your instructor's E-mail address to have your results E-mailed to him or her.
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