WorksheetsUnit 7 - Portable Fire Extinguishers
Total questions: 56
Worksheet time: 28mins
Which portable fire extinguishers are tested to determine non-conductivity?
Class A
Class B
Class C
Class D
Class B fire extinguishers are rated as follows:
1-B through 40-B
1-B through 160-B
1-B through 320-B
1-B through 640-B
Which portable fire extinguisher has no numerical ratings and tested to ensure effectiveness against 2.25 sq. ft. of light cooking oil in a deep fat fryer?
Class A
Class B
Class C
Class K
Class A fire portable fire extinguishers are rated as follows:
1-A through 20-A
2-A through 40-A
2-A through 20-A
1-A through 40-A
Fire extinguishers are rated according to:
the type of extinguishing agent.
the type of fire it can extinguish.
performance capability.
the size of the extinguisher.
Which portable fire extinguisher rating is based on its capability of saponifying cooking oils?
Class A
Class B
Class C
Class D
Class K
Which portable fire extinguisher rating is based on the amount of agent, duration, and range of discharge?
Class A
Class B
Class C
Class D
Class K
On a multiple marking portable fire extinguisher, the ratings for each class are:
directly related to the others.
only identified by pictographs.
separate and do not affect each other.
indicators that firefighters should not use them.
Fire extinguishers rated for multiple classes of fire are identified by:
a combination of shapes
a combination of pictures
a combination of letters
a combination of numbers
Fire extinguishers rated for multiple classes of fire include all of the following letter combinations EXCEPT:
Class A-B-C
Class A-B
Class A-C
Class B-C
Portable fire extinguishers rated Class B-C can be used to extinguish the following types of fire:
wood and computer equipment
gasoline and magnesium
liquid petroleum gas and an electric generator
paper and propane
Fire extinguishers are identified by:
various letters
sets of numbers
extinguisher color
colored geometric shapes or pictographs.
Fire extinguishers are chosen to do the following:
Ensure ease of use
Minimize risk to life and property
Effectively extinguish fire
Minimize risk to life and property and effectively extinguish fire
All of the following factors should be considered when selecting the proper fire extinguisher EXCEPT:
operational concerns
extinguisher location
fuel classification
atmospheric conditions
life hazards
Which is a factor NOT considered when selecting the proper fire extinguisher
Life hazards
Training
Amount of oxygen
Fuel classification
Which statement BEST describes portable fire extinguisher selection?
Extinguisher ratings do not impact selection.
The correct extinguisher will minimize risk to life and property.
The correct extinguisher will always require an expert operator.
All types of extinguishers can be selected regardless of the situation.
Once the proper extinguisher is selected, you must perform a visual inspection to ensure the extinguisher:
has no external marks.
is charged and operable.
feels as though it contains agent.
has a long enough hose to reach the fire.
Once the proper extinguisher is selected, you must check to ensure the pressure gauge:
is not clouded over.
is in the operable range.
has been properly inspected.
records the last maintenance performed.
Portable fire extinguishers should be chosen based on the:
heat of the fire.
type of fuel that is burning.
amount of agent required to extinguish the fire.
distance required between the extinguisher and the fire.
What classification of portable fire extinguisher is used for fires that involve combustible liquids and gases?
Class A
Class B
Class C
Class D
Class K
What classification of portable fire extinguisher is used for fires that involve combustible metals and alloys?
Class A
Class B
Class C
Class D
Class K
What classification of portable fire extinguisher is used on fires that involve combustible cooking oils?
Class A
Class B
Class C
Class D
Class K
Which method of extinguishing works by excluding oxygen from the burning process?
Cooling
Smothering
Saponification
Chain breaking
What expelling mechanism works when the operator physically applies pressure to a pump that increases pressure within the container?
Scoop
Manual pump
Stored pressure
Pressure cartridge
What type of portable fire extinguisher is intended primarily for ground cover fires?
Clean agent
Pump-type water
Aqueous film forming foam
Wet chemical stored-pressure
What type of portable fire extinguisher uses air stored in the tank to force water up a siphon tube when operated?
Clean agent
Pump-type water
Carbon dioxide (CO2)
Stored-pressure water
What type of portable fire extinguisher is intended for use on Class K fires?
Clean agent
Pump-type water
Aqueous film forming foam
Wet chemical stored-pressure
The resulting foam from an aqueous film forming foam (AFFF) extinguisher will ___ fuels lighter than air.
mix in with
float on the surface of
sink below the surface of
cause a chemical reaction with
What application method is used with an aqueous film forming foam (AFFF) extinguisher in order to prevent disturbing the fuel?
Apply foam directly to fuel surface
Apply foam in conjunction with dry ice crystals
Allow foam to gently rain down onto fuel surface
Allow foam to rest before applying to fuel surface
What type of portable fire extinguisher is discharged in the form of gas and works on Class B and Class C fires?
Clean agent
Pump-type water
Carbon dioxide (CO2)
Wet chemical stored-pressure
What type of portable fire extinguisher may produce a cloud that reduces visibility when discharged?
Dry chemical
Pump-type water
Aqueous film forming foam
Wet chemical stored-pressure
What type of portable fire extinguisher may be applied with either an extinguisher or a scoop?
Dry powder
Dry chemical
Pump-type water
Wet chemical stored-pressure
What portable fire extinguisher rating is based on the approximate square foot (square meter) area of flammable liquid a nonexpert operator can extinguish?
Class A rating
Class B rating
Class K rating
Multiple markings
What portable fire extinguisher rating considers both the toxicity of the extinguishing agent and the toxicity of fumes produced when the agent is applied?
Class A rating
Class B rating
Class C rating
Class D rating
On a multiple marking extinguisher the ratings for each class are:
directly related to the others.
only identified by pictographs.
separate, they do not affect each other.
indicators that firefighters should not use them.
Which statement BEST describes portable fire extinguisher selection?
Extinguisher ratings do not impact selection.
The correct extinguisher will minimize risk to life and property.
The correct extinguisher will always require an expert operator.
All types of extinguishers can be selected regardless of the situation.
Once the proper extinguisher is selected, you must perform a visual inspection to ensure the extinguisher:
has no external marks.
is charged and operable.
feels as though it contains agent.
has a long enough hose to reach the fire.
Once the proper extinguisher is selected, you must check to ensure the pressure gauge:
is not clouded over.
is in the operable range.
has been properly inspected.
records the last maintenance performed.
The P in the PASS acronym stands for:
squeeze handles.
aim nozzle at base of fire.
sweep nozzle back and forth.
pull pin by breaking wire or seal.
Which of the following statements BEST describes how to prevent scattering of lightweight fuels?
Wind may be used to allow the agent to reach the fuel surface.
First allow fuel to burn off vapors before applying agent to the fuel surface.
Apply the agent from point where it reaches, but does not disturb, the fuel surface.
Use two extinguishers, alternating application patterns, to apply agent to the fuel surface.
Signal to others that a portable fire extinguisher is empty by:
laying it on its side.
marking it with a tag.
standing it straight up.
covering the hose with a blanket.
NFPA® 10 requires inspection of portable fire extinguishers at least:
after every use.
every three months.
once every six months.
once a year.
During inspection, if a portable fire extinguisher is found deficient in weight by ___ percent it should be removed from service and replaced.
5
8
10
12
Do not remove the safety pin on a portable fire extinguisher until:
ready to use the extinguisher.
the fire appears to be dying out.
ordered to by the commanding officer.
you are 10 feet (3.04 meters) from the fire.
How often should portable fire extinguishers be removed from service for maintenance?
Monthly
Bi-monthly
Annually
Bi-annually
A portable fire extinguisher with this pictogram represents:
Flammable liquids and gases
Ordinary combustibles
Electrical equipment
Combustible metals
A portable fire extinguisher with this pictogram represents:
Ordinary combustibles
Flammable liquids and gases
Combustible metals
Cooking oils
A portable fire extinguisher with this pictogram represents:
Ordinary combustibles
Flammable liquids and gases
Combustible metals
Cooking oils
What type of fire can this portable fire extinguisher be used to extinguish?
Ordinary combustibles
Flammable liquids and gases
Electrical Equipment
All of the above
What type of fire can this portable fire extinguisher be used to extinguish?
Ordinary combustibles
Flammable Liquids and Gases
Cooking Oils
Ordinary combustibles and Cooking oils
All of the above
What type of fire can this portable fire extinguisher be used to extinguish?
Class A
Class B
Class A:B
Class B:C
Class A:B:C
Match the geometric shape with the pictograph below.
Match the geometric shape with the pictograph below.
Match the geometric shape with the pictograph below.
Match the geometric shape with the pictograph below.
Match the geometric shape with the pictograph below.
