Fire prevention programs encourage citizens to keep fire extinguishers in their homes, especially in the:
A. garage.
B. bedrooms.
C. kitchen.
D. near the exits.
Kitchen
Besides putting out incipient fires, what is another use for portable fire extinguishers?
A. Wetting exposures to keep them from igniting from radiated heat
B. Controlling large flammable liquids fires that are not yet dammed or dyked
C. Controlling fires
Controlling fire where traditional methods of suppression are not recommended
What is one advantage of portable fire extinguishers over hoselines?
A. They pack more suppression punch.
B. They have controllable rates of flow.
C. They don't run out as quickly.
D. They are quicker to deploy and use.
They are quicker to deploy and use
What class of fire involves ordinary combustibles, such as wood, paper, cloth, rubber and some plastics?
A. C
B. B
C. A
D. 1
A
What is the most common extinguishing agent for class A fires?
A. Water
B. CO2
C. Dry chemical
D. Carbon tetrachloride
Water
What class of fire would involve energized building wiring, fuse boxes, transformers or generators?
A. F
B. E
C. D
D. C
C
What is one extinguishing agent that will not conduct electricity?
A. Carbon tetrachloride
B. Carbon dioxide
C. Aluminum powder
D. Water with class A foam added
Carbon dioxide
The classification system for fire extinguishers uses which two types of symbols?
A. Bar code and letters
B. Letters and numbers
C. Numbers and dots
D. Dots and bar code
Letters and numbers
example: 1-A=1.25 gallons
2-A = 2.5 gallons
10-B= 10 SQ FT
40-B= 40 SQ FT
Which classes of fire extinguisher include a number in their classification?
A. B and C
B. C and M
C. M and A
D. A and B
A and B
What is the significance of the C in the following fire extinguisher rating? 2-A:10-B:C
A. It means that the agent contained therein is of the cyanoacrylate-base family.
B. It means that this extinguisher can be used on energized electrical equipment.
C.
B. It means that this extinguisher can be used on energized electrical equipment.
Why would a fire extinguisher class icon have a red slash through it?
A. Because using the extinguisher on that class of fire would be ineffective
B. Because using the extinguisher on that class of fire would create additional risk
C. Because the use of t
B. Because using the extinguisher on that class of fire would create additional risk
When determining what risk class to assign a certain building area, what two factors contribute?
A. Direction and density of pedestrian traffic flow
B. Elevation and configuration of the given area
C. Volume and pressure capacity of sprinklers
D. Amount a
D. Amount and type of combustibles present
For an area to qualify as a light hazard, the majority of materials must meet one of two requirements. What is one of those?
A. They must be necessary for the work of the area
B. They must be UL listed
C. They must have ignition temperatures in excess of
D. They must be noncombustible
Light hazard environments usually contain a limited amount of combustibles of what class?
A. Class D
B. Class A
C. Class M
D. Class B
Class A
Which of the following is NOT an example of a light hazard environment?
A. Self-storage
B. Classrooms
C. Assembly halls
D. Hotel guest rooms
A. Self-storage
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 lay people selecting the wrong one
C. Yes, there may be more than one type of combustible
D
C. Yes, there may be more than one type of combustible
All fires require three basic ingredients, one of which is fuel. What is another?
A. Nitrogen
B. Surfactant
C. Water
D. Heat
Heat
What is another word for a fuel's kindling (begins to burn) temperature?
A. Flash point
B. Evolution temperature
C. Liquefaction temperature
D. Ignition point
D. Ignition point
Why is it dangerous to apply a stream of water to energized electrical equipment?
A. Because burning electricity intensifies when struck by water
B. Because water can conduct electricity back to the extinguisher
C. Because electricity extracts the oxygen
B. Because water can conduct electricity back to the extinguisher
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 t
B. Because dry chemicals do not conduct electricity
What is one chemical used as a dry chemical extinguishing agent?
A. Ammonium nitrate
B. Tri-nitro toluene
C. Methyl isocyanate
D. Ammonium phosphate
D. Ammonium phosphate
What is the term for water-soluble flammable liquids such as alcohols, acetone, and others?
A. Volatile fuels
B. Polar solvents
C. Flammable surfactants
D. Three-dimensional liquids
B. Polar solvents
How is the numerical rating of class K extinguishers assigned, if there is such a rating?
A. On the basis of square feet of burning fuel extinguished by an expert
B. On the basis of square feet of burning fuel extinguished by a lay person
C. On the basis
D. There is no such rating assigned
All portable fire extinguishers use what means for expelling their contents?
A. Springs
B. Vacuum
C. Pressure
D. Gravity
pressure
What residue, if any, does a CO2 fire extinguisher leave when discharged?
A. Powdered carbon dioxide
B. It does not leave any residue
C. Selenium oxide
D. Simple salt
B. It does not leave any residue
What is generally the maximum distance a CO2 extinguisher can be expected to reach?
A. 32 feet
B. 16 feet
C. 8 feet
D. 4 feet
C. 8 feet
The horns of some older carbon dioxide extinguishers are made of a substance that both negates their class C rating and makes them dangerous for use on class C fires. What substance are those older horns made of?
A. Bone
B. Clay
C. Wood
D. Metal
D. Metal
Why is the use of halon agents strictly controlled?
A. It is mutagenic.
B. It is carcinogenic.
C. It pollutes ground water.
D. It damages the ozone layer.
D. It damages the ozone layer.
Bromochlorodifluoromethane, although a big word, should be recognized by fire fighters as a certain type of extinguishing agent. What agent?
A. Carbon tet
B. MetalX
C. CO2
D. Halon 1211
D. Halon 1211
What is the relationship, if any, between dry powder and dry chemical extinguishing agents?
A. They are two different names for the same substance with the same application
B. Dry chemical is one of the many types of dry powder
C. Dry powder is one of the
D. They are entirely different substances with entirely different applications
Fire fighters use portable fire extinguishers to put out small fires that do not require the use of what?
the fire department
protective clothing
hoselines
a run report
Hoselines
Portable fire extinguishers have two primary uses. What is one?
defuse possible backdraft conditions
reach rollover gases
Extinguish incipient fires
provide emergency air
Extinguish incipient fires
and
control fires where traditional methods of fire suppression are not recommended
how difficult would it be for a trained person to extinguish a fire in a wastebasket, with a suitable portable fire extinguisher?
It would be easy
Do fire apparatus usually carry portable fire extinguishers?
Yes at least one and sometimes more
How are fires and fire extinguishers grouped ?
both are grouped into types
both are grouped into classes
both are grouped into classes
what one characteristic makes an extinguishing went suitable for fighting class C?
must absorb more heat than water does
must absorb minimal heat
must not conduct electricity
must not conduct electricity
What happens if normal extinguishing agents are tried on class D fires?
nothing happens at all
put out the fire but produce poisonous gases
they may react violently, even explosively
they may react violently, even explosively
How many gallons of water are contained in a class A fire extinguisher with a numerical rating of 2?
1.0
1.5
2.0
2.5
2.5
What is the safest and surest way to extinguish a class C fire?
A: Drench it with copious amounts of water.
B: Turn off the power and treat it as a class A or B fire.
C: Smother it with a treated carbon fire blanket.
D: Evacuate the air in the location of
B: Turn off the power and treat it as a class A or B fire.
10: Fire extinguishers are rated for their ability to control a specific type of fire and:
A: ease of use.
B: reach of agent.
C: overall weight.
D: ability to prevent rekindling.
D: ability to prevent rekindling.
11: What class of fire is depicted in the pictograph system by a burning trash can beside a wood fire?
A: A
B: D
C: M
D: R
A
12: The maximum floor area that can be protected by each extinguisher depends on:
A: the water supply.
B: the occupancy type.
C: the skill of the user.
D: the building's history of fire.
B: the occupancy type.
13: How are occupancy use category and hazard classification related, if at all?
A: They are not necessarily related.
B: Occupancy determines hazard.
C: Hazard determines occupancy.
D: They are the same thing.
A: They are not necessarily related.
14: For an area to qualify for the classification of light hazard, most of the combustibles present must meet one of two requirements. What is one of those?
A: They must be extinguishable by a portable fire extinguisher.
B: They must be arranged so that a
B: They must be arranged so that a fire is unlikely to spread.
15: What hazard category is represented by the following: woodworking shops, service or repair facilities for cars, and cooking areas with deep fryers?
A: Severe
B: Consumer
C: Regular
D: Extra
Extra
16: What is the substance called that is contained in a portable fire extinguisher and puts out the fire?
A: Propellant
B: Extinguishing agent
C: Dry charge
D: Anhydrous material
B: Extinguishing agent
17: What extinguishing method is being used when a foam blanket is placed over the surface of a burning liquid?
A: Cutting off the oxygen
B: Cooling the fuel below its kindling temperature
C: Chemically converting the fuel to a non-fuel
D: Reflecting evol
A: Cutting off the oxygen
18: The dry chemicals in fire extinguishers work in two ways. What is one of those ways?
A: They form an oxygen barrier between the air and the fuel.
B: They chemically convert the fuel to a non-fuel isotope.
C: They interrupt the chemical chain reactions
C: They interrupt the chemical chain reactions of combustion.
19: At what temperature, if at all, are dry chemicals subject to freezing?
A: At the same temperature as fresh water
B: At the same temperature as salt water
C: At the same temperature as n-heptane
D: They are not subject to freezing.
D: They are not subject to freezing.
20: What, if anything, do the chemicals in multipurpose dry chemical extinguishers do to prevent rekindling of the fuel?
A: They form a crust over the fuel.
B: They form a blanket of foam over the fuel.
C: They chemically bond to the fuel making it non-co
A: They form a crust over the fuel.
What is one disadvantage of CO2 extinguishers?
electrical conductivity
messy residue
short discharge range
Short discharge range
Class B foam extinguishers are not suitable for what type of flammable liquid fire?
Gasoline
Diesel Fuel
Cooking Oil
Jet A/B fuel
Cooking oil
Class B extinguishers may be used to some effect on Class A fires
T/F
T
Class A extinguishers may be used to some affect on class B fires
T/F
F
What is the body of a portable fire extinguisher called?
Bell
Horn
Agent
Cylinder
Cylinder
What motion best accomplishes the removal of the pin and tamper seal from a portable fire extinguisher?
slow, steady pull
twisting motion
side to side motion
push, then pull
Twisting motion
what power acts to expel the extinguishing agent in pump tank watertype extinguisher?
hand and arm effort
bottled CO2
compressed nitrogen
gravity
hand and arm effort
how much of a dry chemical extunguisher's full load must be used before it requires recharging?
more than 30%
more than 70%
any at all
all of it
Any at all
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 ?
it can neutralize the foaming properties of any alkaline agent applied to the fire
it will evolv
it can neutralize the foaming properties of any alkaline agent applied to the fire
Does it matter which type of dry powder
extinguisher is used on which type of burning metal?
A. Yes, each type of metal is marked with which
type of dry powder to use in case of fire.
B. Yes, each dry powder extinguisher
is marked with what types of metal
B. Yes, each dry powder extinguisher
is marked with what types of metal it can handle.
When approaching a fire with an extinguisher in hand, fire fighters should always have what behind them?
Exit
the wind
light source
Exit
Advantage of a portable fire extinguishers?
versatility
portability
amount of agent
Portability
What class of fire describes flammable and combustible liquids?
K
A
B
D
B
What class of fire involves combustible metals?
K
A
B
D
D
What class of fire involves combustible cooking oil and fats?
K
A
B
D
K
A class B extinguisher with a rating of 40-B would be expected to extinguish what size flammable liquid surface fire?
40 cubic feet
40 cubic meters
40 square feet
40 square inches
40 square feet
what class of fire is depicted in the pictograph system by a flame and gasoline can?
A
B
C
D
B
what class of fire is depicted in the pictograph system by a flame and an electrical plug and socket
K
B
C
D
C
what class of fire is depicted in the pictograph system by a fire in a frying pan?
K
B
C
D
K
What NFPA standard lists the requirements for placing and mounting portable fire extinguishers?
NFPA 5
NFPA 10
NFPA 15
NFPA 20
NFPA 10
What hazard category is represented by auto showrooms, parking garages, and retail stores?
severe
light
ordinary
extra
ordinary
What can be added to water extinguishers to reduce the surface area of water and thereby to aid in extinguishment of fuels such as baled cotton or fibrous materials?
Alkali metal salt
Alcohol
Quick water
Wetting agent
wetting agent
What is the weight of carbon dioxide in comparison to air?
0.5
1.0
1.5
2.0
1.5
When operating a fire extinguisher the acronym PASS can used. What does the acronym stand for?
point, aim, shoot, stream
point, arms length, sweep, side
push, aim, side,
Pull, aim, squeeze, sweep
Pull, Aim, Squeeze, Sweep
What test measures the ability of a cylinder to withstand internal pressure?
Hydrostatic testing
hydromatic testing
load test
capacity test
Hydrostatic testing