Chapter 7 Flashcards
What expelling mechanism works when the operator physically applies pressure to a pump that increases pressure within the container?
Select one:
a. Stored pressure
b. Scoop
c. Manual pump
d. Pressure cartridge
c.Manual pump
What portable fire extinguisher rating considers both the toxicity of the extinguishing agent and the toxicity of fumes produced when the agent is applied?
Select one:
a. Class B rating
b. Class D rating
c. Class A rating
d. Class C rating
b.Class D rating
Which method of extinguishing works by excluding oxygen from the burning process?
Select one:
a. Chain breaking
b. Smothering
c. Cooling
d. Saponification
b.Smothering
How often should portable fire extinguishers be removed from service for maintenance?
Select one:
a. Bi-monthly
b. Annually
c. Monthly
d. Bi-annually
b.Annually
What type of portable fire extinguisher is intended primarily for ground cover fires?
Select one:
a. Pump-type water
b. Aqueous film forming foam
c. Clean agent
d. Wet chemical stored-pressure
a.Pump-type water
The resulting foam from an aqueous film forming foam (AFFF) extinguisher will ___ fuels lighter than water.
Select one:
a. sink below the surface of
b. mix in with
c. cause a chemical reaction with
d. float on the surface of
d.float on the surface of
Which of the following statements BEST describes how to prevent scattering of lightweight fuels?
Select one:
a. Use two extinguishers, alternating application patterns, to apply agent to the fuel surface.
b. Wind may be used to allow the agent to reach the fuel surface.
c. First allow fuel to burn off vapors before applying agent to the fuel surface.
d. Apply the agent from point where it reaches, but does not disturb, the fuel surface.
d.Apply the agent from point where it reaches, but does not disturb, the fuel surface.
NFPA® 10 requires inspection of portable fire extinguishers at least:
Select one:
a. once every six months.
b. after every use.
c. every three months.
d. once a year.
d.once a year.
What type of portable fire extinguisher may be applied with either an extinguisher or a scoop?
Select one:
a. Dry chemical
b. Dry powder
c. Pump-type water
d. Wet chemical stored-pressure
b.Dry powder
Signal to others that a portable fire extinguisher is empty by:
Select one:
a. marking it with a tag.
b. covering the hose with a blanket.
c. laying it on its side.
d. standing it straight up.
c.laying it on its side.
What type of portable fire extinguisher is discharged in the form of gas and works on Class B and Class C fires?
Select one:
a. Pump-type water
b. Carbon dioxide (CO2)
c. Wet chemical stored-pressure
d. Clean agent
b.Carbon dioxide (CO2)
Once the proper extinguisher is selected, you must perform a visual inspection to ensure the extinguisher:
Select one:
a. has a long enough hose to reach the fire.
b. feels as though it contains agent.
c. has no external marks.
d. is charged and operable.
d.is charged and operable
Once the proper extinguisher is selected, you must check to ensure the pressure gauge:
Select one:
a. has been properly inspected.
b. is in the operable range.
c. is not clouded over.
d. records the last maintenance performed.
b.is in the operable range.
Portable fire extinguishers should be chosen based on the:
Select one:
a. type of fuel that is burning.
b. amount of agent required to extinguish the fire.
c. heat of the fire.
d. distance required between the extinguisher and the fire.
a.type of fuel that is burning.
What classification of portable fire extinguisher is used for fires that involve combustible liquids and gases?
Select one:
a. Class A
b. Class B
c. Class K
d. Class D
b.Class B
The P in the PASS acronym stands for:
Select one:
a. pull pin by breaking wire or seal.
b. sweep nozzle back and forth.
c. aim nozzle at base of fire.
d. squeeze handles.
a.pull pin by breaking wire or seal.
What type of portable fire extinguisher uses air stored in the tank to force water up a siphon tube when operated?
Select one:
a. Stored-pressure water
b. Carbon dioxide (CO2)
c. Pump-type water
d. Clean agent
a.Stored-pressure water
On a multiple marking extinguisher the ratings for each class are:
Select one:
a. directly related to the others.
b. separate, they do not affect each other.
c. only identified by pictographs.
d. indicators that firefighters should not use them.
b.separate, they do not affect each other.
What type of portable fire extinguisher is intended for use on Class K fires?
Select one:
a. Clean agent
b. Aqueous film forming foam
c. Wet chemical stored-pressure
d. Pump-type water
c.Wet chemical stored-pressure
What classification of portable fire extinguisher is used for fires that involve combustible metals and alloys?
Select one:
a. Class D
b. Class A
c. Class B
d. Class K
a.Class D
What portable fire extinguisher rating is based on the approximate square foot (square meter) area of flammable liquid a nonexpert operator can extinguish?
Select one:
a. Class A rating
b. Class K rating
c. Class B rating
d. Multiple markings
c.Class B rating
What application method is used with an aqueous film forming foam (AFFF) extinguisher in order to prevent disturbing the fuel?
Select one:
a. Apply foam in conjunction with dry ice crystals
b. Apply foam directly to fuel surface
c. Allow foam to gently rain down onto fuel surface
d. Allow foam to rest before applying to fuel surface
c.Allow foam to gently rain down onto fuel surface
Do not remove the safety pin on a portable fire extinguisher until:
Select one:
a. you are 10 feet (3.04 meters) from the fire.
b. ready to use the extinguisher.
c. the fire appears to be dying out.
d. ordered to by the commanding officer
b.ready to use the extinguisher.
What classification of portable fire extinguisher is used on fires that involve combustible cooking oils?
Select one:
a. Class B
b. Class K
c. Class A
d. Class D
b.Class K
Which statement BEST describes portable fire extinguisher selection?
Select one:
a. The correct extinguisher will minimize risk to life and property.
b. Extinguisher ratings do not impact selection.
c. The correct extinguisher will always require an expert operator.
d. All types of extinguishers can be selected regardless of the situation.
a.The correct extinguisher will minimize risk to life and property.
During inspection, if a portable fire extinguisher is found deficient in weight by ___ percent it should be removed from service and replaced.
Select one:
a. 5
b. 12
c. 10
d. 8
c.10
What type of portable fire extinguisher may produce a cloud that reduces visibility when discharged?
Select one:
a. Wet chemical stored-pressure
b. Dry chemical
c. Aqueous film forming foam
d. Pump-type water
b.Dry chemical
