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Fire I/II - Chapter 6 - Portable
Extinguishers Questions and Answers
Graded A+
Portable fire extinguishers are classified according to the ✔✔type of fire they are designed to extinguish
A portable fire extinguisher must be labeled with the ✔✔letters and symbols that designate the class rating
How would a fire containing plastics be classified ✔✔Class A
Class A portable fire extinguishers are rated from 1-A through 40-A based upon the amount of water and ✔✔duration and range of discharge used in extinguishing test fires
Which material is a class B fuel ✔✔Gasoline
Which type of extinguishing agent is used to extinguish a Class B fire ✔✔Carbon dioxide
Which statement about Class C fires is accurate ✔✔Once the electricity has been shut off to a Class C fire, it may be treated as a class A or Class B fire
___________ is an example of a Class D fuel ✔✔Magnesium
Which extinguishing agent should be used for a class D fire ✔✔dry powder
When an extinguishing agent is determined to be safe and effective for use on extinguishing combustible metals, it will ✔✔include application instructions on the faceplate
Class K fires involve ✔✔cooking oils
Class K rated extinguishers work because of ________ which converts fatty acids into a soapy film ✔✔saponification
Which method of extinguishment excludes oxygen from the burning process ✔✔smothering
Which extinguisher would be effective for use on a burning puddle of gasoline at a vehicle incident ✔✔aqueous film forming foam
the air aspirating nozzle used with an aqueous film forming foam extinguisher produces ✔✔higher quality foam than a standard nozzle
where should a clean agent extinguisher be used ✔✔computer room fire
What is a characteristic of CO2 extinguishers ✔✔CO2 gas displaces oxygen to smother the fire
In which situation would a dry chem extinguisher be MOST effective ✔✔Fuel spill fire at a vehicle incident
Which statement about dry chem extinguishers is accurate ✔✔particles of the agent may become airborn
When applying dry powder, it is important to ✔✔avoid breaking the crust that forms over the burning material
When selecting appropriate portable fire extinguisher, it is important to consider ✔✔class of fuel that is burning
A _____ extinguisher should be used in areas with highly sensitive computer equipment because it will cause less damage to the equipment ✔✔clean agent
What should be the next step after choosing appropriate fire extinguisher ✔✔Inspect the extinguisher to make sure its charged and operable
When operating a portable fire extinguisher, it is safest to approach the fire ✔✔with the wind at your back
What is the first step in the PASS application method of operating a portable fire extinguisher ✔✔pull the pin to break the thin wire or plastic seal
When operating a portable fire extinguisher, ✔✔aim the nozzle at the base of the fire
Which statement about using a portable fire extinguisher on an incipient stage fire is accurate ✔✔Operating close to the fire can scatter solid fuel or penetrate the surface of liquid fuel
