2025 FIREFIGHTER HAZMAT OPS EXAM FINAL EXAM LATEST 3 VERSIONS
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A
Hazardous Material - CORRECT ANSWER Any substance or
material that is capable of posing a unreasonable risk to
human health, safety, or the environment when transported
in commerce, used incorrectly, or not properly contained or
stored
WMD(Weapon Of Mass Destruction - CORRECT ANSWER
Weapons whose use is intended to cause mass causalities,
damage, and chaos. (NFPA classifies as hazardous material )
Neurotoxin - CORRECT ANSWER This type of chemical
causes damage to the nervous system
NFPA Standard 704 - CORRECT ANSWER Container
marking that is used for fixed facilities
Corrosivity(Ph) - CORRECT ANSWER A measure of a
substance's tendency to deteriorate in the presence of
another substance or in a particular environment
Lower Explosive Limit(LEL) - CORRECT ANSWER The
minimum concentration of vapor to air below which a flame
will not propagate in the presence of an ignition source
Upper Explosive Limit(UEL) - CORRECT ANSWER The
maximum vapor to air concentration above which a flame
will not propagate
,Flash Point - CORRECT ANSWER The temperature at which
a liquid will give off sufficient vapors that will ignite readily
given an ignition source
Specific Gravity - CORRECT ANSWER Ratio of the weight
of a liquid or solid as compared to an equal amount of water
Persistence - CORRECT ANSWER A materials ability to
stay within the area of release for a long period of time
Particle Size - CORRECT ANSWER Refers to solids, and is
expressed in microns or percent passing through a meshed
screen
Ignition Temperature/ - CORRECT ANSWER The minimum
temperature required to cause self-sustained combustion in
the absence of any source of ignition
D.O.T Class 1 Hazardous Materials - CORRECT ANSWER
Explosives
D.O.T Class 2 Hazardous Materials - CORRECT ANSWER
Gases
D.O.T Class 3 Hazardous Materials - CORRECT ANSWER
Flammable/Combustible Liquids
D.O.T Class 4 Hazardous Materials - CORRECT ANSWER
Flammable solids/ spontaneously combustible materials/
dangerous-when-wet materials/water-reactive substances
,D.O.T Class 5 Hazardous Materials - CORRECT ANSWER
Oxidizing Substances/Organic Peroxides
D.O.T Class 6 Hazardous Materials - CORRECT ANSWER
Toxic Substances/Infectious Substances
D.O.T Class 7 Hazardous Materials - CORRECT ANSWER
Radioactive Materials
D.O.T Class 8 Hazardous Materials - CORRECT ANSWER
Corrosive Substances
D.O.T Class 9 Hazardous Materials - CORRECT ANSWER
Miscellaneous hazardous
materials/products/substances/organisms
Emergency Response Guidebook(ERG) - CORRECT ANSWER
Developed by D.O.T/ SCT/TC
:Preliminary action guide for first responders operating at
hazardous materials incidents in coordination with the
D.O.T's labels and placard marking system
Identify the THREE items that an Operations level responder
must protect when responding to a release or potential
release of a hazardous material. - CORRECT ANSWER 1.
Nearby people
2. Environment
3. Reports about the incident
Industrial packages are designed to transport radioactive
materials with: - CORRECT ANSWER Low concentrations,
, that are considered to be a limited threat to the public, and
packaged in glass or concrete.
You're driving alongside the railroad tracks and see a tank
car with a white body and two red vertical bands. A label on
the tank reads "HIGHLY TOXIC." You have just seen a: -
CORRECT ANSWER Pressure railway tank car
Strong, tight packages are designed to transport radioactive
materials with: - CORRECT ANSWER Low radioactivity
such as natural uranium and rubble from nuclear reactors
and packaged in steel, wood, or fiberboard
Intermodal equipment, including tank containers will have
all of the markings below EXCEPT: - CORRECT ANSWER A
three-letter abbreviation for the owner, followed by an "X"
and numbers
As you survey an incident, you DO NOT need to consider: -
CORRECT ANSWER Drainage capacity
CHEMTREC has access to all of the following resources
EXCEPT the: - CORRECT ANSWER Chemical Mixers
Association
Information about the role of local, state, and Federal
authorities during hazardous materials emergencies can be
found: - CORRECT ANSWER In the local emergency
response plan
You are at a HazMat incident that you suspect involves
criminal or terrorist activity. There are munitions involved
QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A
Hazardous Material - CORRECT ANSWER Any substance or
material that is capable of posing a unreasonable risk to
human health, safety, or the environment when transported
in commerce, used incorrectly, or not properly contained or
stored
WMD(Weapon Of Mass Destruction - CORRECT ANSWER
Weapons whose use is intended to cause mass causalities,
damage, and chaos. (NFPA classifies as hazardous material )
Neurotoxin - CORRECT ANSWER This type of chemical
causes damage to the nervous system
NFPA Standard 704 - CORRECT ANSWER Container
marking that is used for fixed facilities
Corrosivity(Ph) - CORRECT ANSWER A measure of a
substance's tendency to deteriorate in the presence of
another substance or in a particular environment
Lower Explosive Limit(LEL) - CORRECT ANSWER The
minimum concentration of vapor to air below which a flame
will not propagate in the presence of an ignition source
Upper Explosive Limit(UEL) - CORRECT ANSWER The
maximum vapor to air concentration above which a flame
will not propagate
,Flash Point - CORRECT ANSWER The temperature at which
a liquid will give off sufficient vapors that will ignite readily
given an ignition source
Specific Gravity - CORRECT ANSWER Ratio of the weight
of a liquid or solid as compared to an equal amount of water
Persistence - CORRECT ANSWER A materials ability to
stay within the area of release for a long period of time
Particle Size - CORRECT ANSWER Refers to solids, and is
expressed in microns or percent passing through a meshed
screen
Ignition Temperature/ - CORRECT ANSWER The minimum
temperature required to cause self-sustained combustion in
the absence of any source of ignition
D.O.T Class 1 Hazardous Materials - CORRECT ANSWER
Explosives
D.O.T Class 2 Hazardous Materials - CORRECT ANSWER
Gases
D.O.T Class 3 Hazardous Materials - CORRECT ANSWER
Flammable/Combustible Liquids
D.O.T Class 4 Hazardous Materials - CORRECT ANSWER
Flammable solids/ spontaneously combustible materials/
dangerous-when-wet materials/water-reactive substances
,D.O.T Class 5 Hazardous Materials - CORRECT ANSWER
Oxidizing Substances/Organic Peroxides
D.O.T Class 6 Hazardous Materials - CORRECT ANSWER
Toxic Substances/Infectious Substances
D.O.T Class 7 Hazardous Materials - CORRECT ANSWER
Radioactive Materials
D.O.T Class 8 Hazardous Materials - CORRECT ANSWER
Corrosive Substances
D.O.T Class 9 Hazardous Materials - CORRECT ANSWER
Miscellaneous hazardous
materials/products/substances/organisms
Emergency Response Guidebook(ERG) - CORRECT ANSWER
Developed by D.O.T/ SCT/TC
:Preliminary action guide for first responders operating at
hazardous materials incidents in coordination with the
D.O.T's labels and placard marking system
Identify the THREE items that an Operations level responder
must protect when responding to a release or potential
release of a hazardous material. - CORRECT ANSWER 1.
Nearby people
2. Environment
3. Reports about the incident
Industrial packages are designed to transport radioactive
materials with: - CORRECT ANSWER Low concentrations,
, that are considered to be a limited threat to the public, and
packaged in glass or concrete.
You're driving alongside the railroad tracks and see a tank
car with a white body and two red vertical bands. A label on
the tank reads "HIGHLY TOXIC." You have just seen a: -
CORRECT ANSWER Pressure railway tank car
Strong, tight packages are designed to transport radioactive
materials with: - CORRECT ANSWER Low radioactivity
such as natural uranium and rubble from nuclear reactors
and packaged in steel, wood, or fiberboard
Intermodal equipment, including tank containers will have
all of the markings below EXCEPT: - CORRECT ANSWER A
three-letter abbreviation for the owner, followed by an "X"
and numbers
As you survey an incident, you DO NOT need to consider: -
CORRECT ANSWER Drainage capacity
CHEMTREC has access to all of the following resources
EXCEPT the: - CORRECT ANSWER Chemical Mixers
Association
Information about the role of local, state, and Federal
authorities during hazardous materials emergencies can be
found: - CORRECT ANSWER In the local emergency
response plan
You are at a HazMat incident that you suspect involves
criminal or terrorist activity. There are munitions involved
