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California Firefighter Hazardous Materials
Operations Exam Practice Questions &
RATIONALES LATEST UPDATE THIS YEAR
California Firefighter Hazardous Materials Operations Exam Practice Questions
This practice exam is designed to help you prepare for the California Firefighter Hazardous
Materials Operations certification exam. The questions are aligned with NFPA 472/1072
standards, California State Fire Training (SFT) requirements, and the Office of the State Fire
Marshal (OSFM) guidelines.
Exam Coverage Summary
Recognition and Identification: Placards, container types, ERG usage, NFPA 704 system
Hazard Classes & Chemical Behavior: DOT hazard classes, physical and chemical properties
Defensive Strategies: Diking, damming, diversion, absorption, and containment
PPE & Decontamination: Levels of protection, proper PPE selection, basic decontamination
Incident Command System (ICS): Zones (hot, warm, cold), safety protocols, unified command
Emergency Response Guidebook (ERG): Isolation distances, initial response actions
Exposure Routes & Health Hazards: Routes of entry, signs/symptoms of exposure
Section I: Recognition & Identification
1. Upon arrival at a highway tanker rollover, you observe a placard with a flame symbol and
the number 3. What hazard class does this indicate?
A) Flammable gas
B) Flammable liquid
C) Oxidizer
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D) Corrosive
Answer: B
Class 3 represents flammable liquids such as gasoline. The flame symbol with the number 3 is
the DOT placard for flammable liquids .
2. A diamond-shaped placard with a flame symbol and the number 3 indicates:
A) Flammable gas
B) Flammable liquid
C) Combustible liquid
D) Flammable solid
Answer: B
DOT Class 3 is for flammable liquids. This is a fundamental identification skill for operations-
level responders .
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3. The Emergency Response Guidebook (ERG) is published by which agency?
A) OSHA
B) DOT
C) EPA
D) NFPA
Answer: B
The U.S. Department of Transportation (DOT) publishes the Emergency Response Guidebook
(ERG) to assist first responders in the initial phase of a hazardous materials incident .
4. In the NFPA 704 system, a "4" in the red diamond indicates:
A) Will rapidly vaporize at atmospheric pressure
B) Will burn readily at normal temperatures
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C) Materials that will detonate at normal temperature
D) Materials that are extremely flammable
Answer: D
In the NFPA 704 hazard diamond, the red quadrant represents flammability. A rating of "4"
indicates materials that will vaporize readily at atmospheric pressure and burn readily—the
highest flammability hazard .
5. A rail tank car with a circular cross-section and visible expansion dome is likely a:
A) DOT-111
B) DOT-112
C) DOT-114
D) DOT-117
California Firefighter Hazardous Materials
Operations Exam Practice Questions &
RATIONALES LATEST UPDATE THIS YEAR
California Firefighter Hazardous Materials Operations Exam Practice Questions
This practice exam is designed to help you prepare for the California Firefighter Hazardous
Materials Operations certification exam. The questions are aligned with NFPA 472/1072
standards, California State Fire Training (SFT) requirements, and the Office of the State Fire
Marshal (OSFM) guidelines.
Exam Coverage Summary
Recognition and Identification: Placards, container types, ERG usage, NFPA 704 system
Hazard Classes & Chemical Behavior: DOT hazard classes, physical and chemical properties
Defensive Strategies: Diking, damming, diversion, absorption, and containment
PPE & Decontamination: Levels of protection, proper PPE selection, basic decontamination
Incident Command System (ICS): Zones (hot, warm, cold), safety protocols, unified command
Emergency Response Guidebook (ERG): Isolation distances, initial response actions
Exposure Routes & Health Hazards: Routes of entry, signs/symptoms of exposure
Section I: Recognition & Identification
1. Upon arrival at a highway tanker rollover, you observe a placard with a flame symbol and
the number 3. What hazard class does this indicate?
A) Flammable gas
B) Flammable liquid
C) Oxidizer
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D) Corrosive
Answer: B
Class 3 represents flammable liquids such as gasoline. The flame symbol with the number 3 is
the DOT placard for flammable liquids .
2. A diamond-shaped placard with a flame symbol and the number 3 indicates:
A) Flammable gas
B) Flammable liquid
C) Combustible liquid
D) Flammable solid
Answer: B
DOT Class 3 is for flammable liquids. This is a fundamental identification skill for operations-
level responders .
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3. The Emergency Response Guidebook (ERG) is published by which agency?
A) OSHA
B) DOT
C) EPA
D) NFPA
Answer: B
The U.S. Department of Transportation (DOT) publishes the Emergency Response Guidebook
(ERG) to assist first responders in the initial phase of a hazardous materials incident .
4. In the NFPA 704 system, a "4" in the red diamond indicates:
A) Will rapidly vaporize at atmospheric pressure
B) Will burn readily at normal temperatures
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C) Materials that will detonate at normal temperature
D) Materials that are extremely flammable
Answer: D
In the NFPA 704 hazard diamond, the red quadrant represents flammability. A rating of "4"
indicates materials that will vaporize readily at atmospheric pressure and burn readily—the
highest flammability hazard .
5. A rail tank car with a circular cross-section and visible expansion dome is likely a:
A) DOT-111
B) DOT-112
C) DOT-114
D) DOT-117
