Fire Service Ventilation (7th Edition)
Chapter 1-Fire Behavior/Airflow
Characteristics
Multiple Choice Test
32 questions
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| 1) All
of the following are characteristics of the Incipient phase of fire
EXCEPT.
a.
Earliest phase of fire.
b.
Flame temperature of about 300OF.
c.
Usually limited to original products of combustion.
d.
Begins with the actual ignition.
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| 2)
What is the phase of fire that occurs when the supply of
oxygen has been depleted?
a.
Steady-State Phase.
b.
Free-burning Phase.
c.
Hot Smoldering Phase.
d.
Incipient Phase.
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| 3) Opening
a window or door can be used to ventilate a structure with an incipient
phase fire usually with good results.
a.
TRUE
b.
FALSE
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| 4) What
term is used to describe simultaneous ignition of the entire contents of a
room?
a.
Flashback
b.
Rollover
c.
Backdraft
d.
Flashover
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| 5) What
type of fire attack is useful at preventing flashover conditions?
a.
Not applying water.
b.
Directing water toward the ceiling and room contents.
c.
Directing water toward ceiling ONLY.
d.
Sweeping the base of the fire with water.
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| 6)
Opening a door or window in the last phase of fire is
usually adequate for ventilation.
a.
TRUE
b.
FALSE
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| 7) All
of the following are warning signs of potential backdraft EXCEPT.
a.
Flames coming from a large area.
b.
Smoke-stained windows.
c.
Muffled sounds.
d.
Grayish-yellow smoke.
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| 8) What
should firefighters do when they see the fire diminishing before
water is applied?
a.
Assume that backdraft conditions may exist.
b.
Apply water immediately.
c.
Let the fire burn out completely and open some windows.
d.
Start salvage operations.
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| 9) What
can be done if a backdraft is imminent, vertical ventilation is in place,
and you are inside a structure?
a.
Apply a fog stream to the ceiling.
b.
Stay standing and hold your position.
c.
Stay low and as far from the ventilation hole as possible.
d.
Break out a window for extra ventilation.
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| 10)
What is a British Thermal Unit?
a.
The amount of heat energy needed to raise the temperature of one pound of
water one degree Fahrenheit.
b.
The amount of heat energy needed to raise the temperature of one ounce of
water one
degree Fahrenheit.
c.
The amount of heat energy needed to raise the temperature of one gram of
water one degree Fahrenheit.
d.
The amount of heat energy needed to raise the temperature of one gram of
water one degree Celsius.
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| 11)
The amount of heat energy needed to raise one gram of water one degree
Celsius is called.
a.
A Btu
b.
An SI
c.
A Joule
d.
A Calorie
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| 12)
What fire gas is present in all fires?
a.
Hydrogen Cyanide
b.
Hydrogen Chloride
c.
Carbon Chloride
d.
Carbon Monoxide
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| 13)
Temperature is an indicator of heat.
a.
TRUE
b.
FALSE
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| 14)When
heat tends to flow from a warmer substance to a colder substance, it is
referred to as.
a.
The Inversion Factor
b.
The Law of Heat Flow
c.
The Law of Temperature Conversion
d.
The Conversion Factor
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| 15)
Which of the following are considered carcinogens?
a.
Hydrogen Peroxide
b.
Oxygen (decreased levels)
c.
Asbestos
d.
NONE OF THE ABOVE
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| 16)
What happens to a gas with a vapor density of 0.6.
a.
It sinks to the ground
b.
It hovers around the ground
c.
It floats upward
d.
It floats upward, then sinks
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| 17)
The vapor density is a
fixed characteristic of a gas and cannot change.
a.
TRUE
b.
FALSE
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| 18)
What happens to fire gases as the temperature in the
structure decreases?
a.
They tend to return to ground level
b.
They tend to hover close the ceiling
c.
They tend to dissipate.
d.
ALL OF THE ABOVE.
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| 19)
SCBA should be used during salvage even after the fire is
out.
a.
TRUE
b.
FALSE
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| 20)
What fire gas is found in the manufacture of
pharmaceuticals, herbicides, and tear gas?
a.
Acrolein
b.
Hydrogen Cyanide
c.
Hydrogen Chloride
d.
Nitric Oxide
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| 21)
What fire gas has a distinct odor of musty hay?
a.
Hydrogen Cyanide
b.
Phosgene
c.
Nitric Oxide
d.
Acrolein
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| 22)
What fire gas is produced from the burning of products
containing nitrogen?
a.
Nitrogen Dioxide
b.
Hydrogen Chloride
c.
Acrolein
d.
Hydrogen Cyanide
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| 23)
What is a fire gas that has a reddish-brown or copper
color?
a.
Phosgene
b.
Hydrogen Chloride
c.
Nitric Oxide
d.
Hydrogen Cyanide
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| 24)
What term is used to describe smoke and gases that rise to
the top of a structure, spread out laterally, then bank down?
a.
Pressure Differential
b.
Thermal Layering
c.
Mushrooming
d.
NONE OF THE ABOVE
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| 25)
A pressure differential is a horizontal layering of
different temperature levels within a space.
a.
TRUE
b.
FALSE
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| 26)
Which of the following
are non-fire gases that can be found in a community?
a.
Sulfur Dioxide
b.
Carbon Dioxide
c.
Nitric Oxide
d.
ALL OF THE ABOVE
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| 27)
Which of the following gases are lighter-than-air gases?
a.
Hydrogen
b.
Methane
c.
Acetylene
d.
ALL OF THE ABOVE
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| 28)
Which of the following gases are heavier-than-air gases?
a.
Chlorine
b.
Hydrogen
c.
Natural Gas
d.
NONE OF THE ABOVE
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| 29)
Pressure is transferred
from areas of lower pressure to areas of higher pressure until the
pressures are equal.
a.
TRUE
b.
FALSE
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| 30)
What is a neutral pressure plane?
a.
A horizontal plane where a vacuum exists.
b.
A vertical plane where pressure is at atmospheric pressure.
c.
A horizontal plane where pressure is equal to atmospheric pressure.
d.
A horizontal plane where pressure is equal to the pressure at the top of
the structure.
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| 31)
What term is used to describe any vertical shaft that acts
as a chimney by channeling smoke, heat, and products of combustion upward
due to convection?
a.
Upward Effect
b.
Rising Effect
c.
Block Effect
d.
Stack Effect
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| 32)
Which of the following factors affect dilution rate?
a.
Size of openings being used.
b.
Availability of replacement air.
c.
Placement of fan
d.
ALL OF THE ABOVE
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