CHAPTER 7 - FIRE EXTINGUISHERS
EXAM QUESTIONS WITH VERIFIED
RIGHT SOLUTIONS .
When operating a fire extinguisher, the acronym PASS can be used to assist you in the steps. What
does the acronym stand for?
A) Point, aim, shoot, stream
B) Point, arms length, sweep, side
C) Push, aim, side, side
D) Pull, aim, squeeze, sweep
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 250 - Correct Answer -D) Pull, aim, squeeze,
sweep
Why can dry chemical extinguishers be used on Class C fires?
A) Because dry chemicals are chemically similar to water
B) Because dry chemicals do not conduct electricity
C) Because dry chemicals never actually touch the fuel
D) Because dry chemicals are themselves electrically static
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 234 - Correct Answer -B) Because dry
chemicals do not conduct electricity
When should fire extinguishers on apparatus be inspected?
A) Monthly
B) Annually
C) When there is evidence the extinguisher has been used
D) Along with regular apparatus equipment checks
Feedback :
1
,Fundamentals of Fire Fighter Skills, Fourth Edition, page 258 - Correct Answer -D) Along with regular
apparatus equipment checks
Is it ever appropriate to have two different types of fire extinguisher in the same area?
A) No, this sets up the possibility of opposing streams.
B) No, this risks laypeople selecting the wrong one.
C) Yes, there may be more than one type of combustible.
D) No, this is prohibited by the building code.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 238 - Correct Answer -C) Yes, there may be
more than one type of combustible.
What is another word for the point at which a material begins to burn?
A) Flash point
B) Evolution temperature
C) Liquefaction temperature
D) Ignition temperature
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 232 - Correct Answer -D) Ignition
temperature
What is the body of a portable fire extinguisher called?
A) The bell
B) The horn
C) The agent
D) The cylinder
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 239 - Correct Answer -D) The cylinder
If a fire extinguisher containing ammonium phosphate is used on a Class K fire, not only will it be
ineffective, but it can actually worsen the problem. How?
A) It can counteract the foaming properties of any alkaline agent applied to the fire.
2
, B) It will emit hydrogen cyanide gas, a deadly and penetrating poison.
C) It will cause a rapid polymerization, resulting in a near-BLEVE expansion of the fuel.
D) It can cause the fuel to heat up internally to reacquire its flash point.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 245 - Correct Answer -A) It can counteract
the foaming properties of any alkaline agent applied to the fire.
What is one chemical used as a dry chemical extinguishing agent?
A) Ammonium nitrate
B) Trinitrotoluene
C) Methyl isocyanate
D) Ammonium phosphate
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 243 - Correct Answer -D) Ammonium
phosphate
What one characteristic makes an extinguishing agent suitable for fighting Class C fires?
A) It must absorb more heat than water does.
B) It must absorb only minimal heat.
C) It must not catalyze a polymer reaction.
D) It must not conduct electricity.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 234 - Correct Answer -D) It must not
conduct electricity.
Which class of fire involves flammable or combustible liquids?
A) K
B) A
C) B
D) D
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 233 - Correct Answer -C) B
3
EXAM QUESTIONS WITH VERIFIED
RIGHT SOLUTIONS .
When operating a fire extinguisher, the acronym PASS can be used to assist you in the steps. What
does the acronym stand for?
A) Point, aim, shoot, stream
B) Point, arms length, sweep, side
C) Push, aim, side, side
D) Pull, aim, squeeze, sweep
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 250 - Correct Answer -D) Pull, aim, squeeze,
sweep
Why can dry chemical extinguishers be used on Class C fires?
A) Because dry chemicals are chemically similar to water
B) Because dry chemicals do not conduct electricity
C) Because dry chemicals never actually touch the fuel
D) Because dry chemicals are themselves electrically static
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 234 - Correct Answer -B) Because dry
chemicals do not conduct electricity
When should fire extinguishers on apparatus be inspected?
A) Monthly
B) Annually
C) When there is evidence the extinguisher has been used
D) Along with regular apparatus equipment checks
Feedback :
1
,Fundamentals of Fire Fighter Skills, Fourth Edition, page 258 - Correct Answer -D) Along with regular
apparatus equipment checks
Is it ever appropriate to have two different types of fire extinguisher in the same area?
A) No, this sets up the possibility of opposing streams.
B) No, this risks laypeople selecting the wrong one.
C) Yes, there may be more than one type of combustible.
D) No, this is prohibited by the building code.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 238 - Correct Answer -C) Yes, there may be
more than one type of combustible.
What is another word for the point at which a material begins to burn?
A) Flash point
B) Evolution temperature
C) Liquefaction temperature
D) Ignition temperature
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 232 - Correct Answer -D) Ignition
temperature
What is the body of a portable fire extinguisher called?
A) The bell
B) The horn
C) The agent
D) The cylinder
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 239 - Correct Answer -D) The cylinder
If a fire extinguisher containing ammonium phosphate is used on a Class K fire, not only will it be
ineffective, but it can actually worsen the problem. How?
A) It can counteract the foaming properties of any alkaline agent applied to the fire.
2
, B) It will emit hydrogen cyanide gas, a deadly and penetrating poison.
C) It will cause a rapid polymerization, resulting in a near-BLEVE expansion of the fuel.
D) It can cause the fuel to heat up internally to reacquire its flash point.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 245 - Correct Answer -A) It can counteract
the foaming properties of any alkaline agent applied to the fire.
What is one chemical used as a dry chemical extinguishing agent?
A) Ammonium nitrate
B) Trinitrotoluene
C) Methyl isocyanate
D) Ammonium phosphate
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 243 - Correct Answer -D) Ammonium
phosphate
What one characteristic makes an extinguishing agent suitable for fighting Class C fires?
A) It must absorb more heat than water does.
B) It must absorb only minimal heat.
C) It must not catalyze a polymer reaction.
D) It must not conduct electricity.
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 234 - Correct Answer -D) It must not
conduct electricity.
Which class of fire involves flammable or combustible liquids?
A) K
B) A
C) B
D) D
Feedback :
Fundamentals of Fire Fighter Skills, Fourth Edition, page 233 - Correct Answer -C) B
3
