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Portable Fire Extinguishers Chapter 8
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A Class A fire extinguisher with a numerical rating of 2 contains __ gallon of water ✔✔2.
A Class B foam extinguisher is not rated for which fuel ✔✔Cooking oil
A Class C agent must ✔✔not conduct electricity
A Class C extinguisher is rated for use on ✔✔energized electrical equipment
A Class K agent's effect on the fuel is known as ✔✔saponification
A fire extinguisher's agent is stored within its ✔✔cylinder
A loaded stream extinguisher is designed to ✔✔resist freezing
A portable fire extinguisher is bested suited for which situation ✔✔Fire in a wastebasket
A potential problem with application of a multipurpose dry chemical agent to a Class K fire is ✔✔neutralization of other agents applied to the fire
According of NFPA 10, the maximum floor area that can be protected by each extinguisher depends on the ✔✔occupancy type
All fire extinguishers are classified according to ✔✔the classes of fire on which they are effective
All portable fire extinguishers use which means for expelling their contents ✔✔pressure
Bromochlorodifluoromethane is a ___ agent ✔✔halogenated
Class D agents work primarily by ✔✔forming a crust over the fuel
Combustion begins when a fuel is heated to its ✔✔ignition point
For the purpose of fire extinguisher placement, what is the relationship between occupancy use category and hazard classification ✔✔They are not necessarily related
How do multipurpose dry chemical agents prevent rekindling of Class A fuel ✔✔By forming a crust over the fuel
If a private residence has a single fire extinguisher, where should it be located ✔✔Kitchen
In general , the maximum reach of CO2 extinguisher is __ feet ✔✔ 8
Requirements for placing and mounting portable fire extinguishers are sound in NFPA ✔✔ 10
The "P" in the acronym PASS, used in reference to fire extinguisher operation, stands for ✔✔pull
The hydrostatic test interval for a dry chemical extinguisher with a stainless steel shell is every __ years ✔✔ 5
The traditional symbol for a Class D fire extinguisher is a(n) ✔✔yellow star
The use of Halon 1211 is strictly controlled because it is ✔✔harmful to the environment
The weight of carbon dioxide is about __ the weight of air ✔✔one-and-a-half times
To qualify as a light hazard for the purpose of extinguisher election and placement, the majority of materials in the area must ✔✔be noncombustible
What does a rating of 40 on a Class B extinguisher mean ✔✔Sufficient extinguishing power for 40 square feet of burning fuel
What does it mean when a fire extinguisher has a pictograph with a red slash through it ✔✔Use on that class of fire could be hazardous
What expels the extinguishing agent from a pump tank water extinguisher ✔✔manual effort
What is the primary extinguishing mechanism of dry chemical agent ✔✔Interrupting the chemical chain reaction
What is the term for a water-soluble flammable liquid ✔✔Polar solvent
What is the term for the substance that puts out the fire ✔✔Extinguishing agent
What is used to pressurize a stored-pressure water extinguisher ✔✔Compressed air
What residue does a CO2 fire extinguisher leave when discharged;
A)Carbon
B)Iron oxide
C)Mineral salt
D)None ✔✔None
When approaching a fire with an extinguisher in hand, you should always have a(n) ✔✔exit route
Which agent is approved for use in a Class K system ✔✔Wet Chemical
Which agent is rated for use on Class A fires ✔✔Ammonium phosphate
Which class of fire extinguisher includes a number in its classification ✔✔A
Which class of fire includes cloth ✔✔A
Which class of fire includes flammable and combustible liquids ✔✔B
Which class of fire involves combustible cooking oils and fats ✔✔K
Which class of fire involves combustible metals ✔✔D
Which class of fire involves energized electrical equipment ✔✔C
Which feature of some carbon dioxide extinguisher makes them dangerous for use on class C fires ✔✔Metal horn
Which fire extinguishing agent is best for use on sensitive electronic equiment ✔✔Carbon dioxide
Which hazard category includes automotive service or repair facilities ✔✔extra
Which motion best accomplishes the removal of the pin and tamper seal from a portable fire extinguisher ✔✔twisting motion
Which of the following is commonly used as a dry chemical extinguishing agent ✔✔ammonium phosphate
Which of the following is one of the three basic components required for fire ✔✔oxygen
Which statement about dry chemical agents is correct ✔✔dry chemical agents are not subject to freezing
Which statement about foam fire extinguishers is correct ✔✔Class B foam extinguisher may be used to some effect on Class A fires
Which statement about the numerical rating of a Class K ✔✔There is no numerical rating for a Class K extinguisher
Which statement best summarizes when a dry chemical extinguisher should be serviced and recharged ✔✔After any discharge
Which statement is correct regarding Class D extinguishing agents ✔✔The specific agent must be matched to the specific fuel
