1
HAZMAT MATERIALS OPERATIONS CORE TEST
112 QUESTIONS WITH ACTUAL ANSWERS
2025/2026NEWEST UPDATE for a Specific Exam
Which of the following is NOT one of the three primary priorities at a
hazardous materials incident?
A. Recovery
B. Life Safety
C. Incident Stabilization
D. Protection of property
Ans: A. Recovery
Car boys commonly contain what type of product?
Ans: Corrosives
What motor transport vehicle is commonly used to transport motor fuel oils.
Ans: MC-306
A rail car that is stenciled with a chemicals proper shipping name is a
Ans: Dedicated Car
Which of the following is the first priority at a hazardous materials incident?
A. Incident Stabilization
B. Protection of the environment
Pretest - Stuvia US
,2
C. Safety of emergency responders
D. Initiation of the incident management system.
Ans: C. Safety of emergency responders
During which of the following stages the incident Commander determine if
additional help is needed?
A. Analysis Stage
B. Evaluation Stage
C. Implementation Stage
D. Processing and or planning stage
Ans: A. Analysis Stage
A non-insulated, single show vessel, which carries gases that have been
liquefied is:
Ans: MC-331
A substance that releases ionizing particles is DOT Hazard Class?
A. 4
B. 6
C. 7
D. 3
Ans: C. 7
Which of the following strategies isolates the area to protect the public and
emergency responders, but allows the incident to run its course on it own?
Pretest - Stuvia US
, 3
A. Offensive Strategy
B. Defensive Strategy
C. Combination Strategy
D. Non-intervention Strategy
Ans: D. Non-intervention Strategy
The amount of an ingested, absorbed, or injected substance that results in
the death of 50% of the test population?
A. LDLO
B. LDTD
C. LD50
D. LC50
Ans: C. LD50
Which DOT Hazard Class does flammable solids fall under
Ans: 4
During which of the following stages does the incident commander establish
and enforce scene control perimeters?
A. Analysis stage
B. Evaluation stage
C. Implementation stage
D. Processing and/or planning stage
Pretest - Stuvia US
HAZMAT MATERIALS OPERATIONS CORE TEST
112 QUESTIONS WITH ACTUAL ANSWERS
2025/2026NEWEST UPDATE for a Specific Exam
Which of the following is NOT one of the three primary priorities at a
hazardous materials incident?
A. Recovery
B. Life Safety
C. Incident Stabilization
D. Protection of property
Ans: A. Recovery
Car boys commonly contain what type of product?
Ans: Corrosives
What motor transport vehicle is commonly used to transport motor fuel oils.
Ans: MC-306
A rail car that is stenciled with a chemicals proper shipping name is a
Ans: Dedicated Car
Which of the following is the first priority at a hazardous materials incident?
A. Incident Stabilization
B. Protection of the environment
Pretest - Stuvia US
,2
C. Safety of emergency responders
D. Initiation of the incident management system.
Ans: C. Safety of emergency responders
During which of the following stages the incident Commander determine if
additional help is needed?
A. Analysis Stage
B. Evaluation Stage
C. Implementation Stage
D. Processing and or planning stage
Ans: A. Analysis Stage
A non-insulated, single show vessel, which carries gases that have been
liquefied is:
Ans: MC-331
A substance that releases ionizing particles is DOT Hazard Class?
A. 4
B. 6
C. 7
D. 3
Ans: C. 7
Which of the following strategies isolates the area to protect the public and
emergency responders, but allows the incident to run its course on it own?
Pretest - Stuvia US
, 3
A. Offensive Strategy
B. Defensive Strategy
C. Combination Strategy
D. Non-intervention Strategy
Ans: D. Non-intervention Strategy
The amount of an ingested, absorbed, or injected substance that results in
the death of 50% of the test population?
A. LDLO
B. LDTD
C. LD50
D. LC50
Ans: C. LD50
Which DOT Hazard Class does flammable solids fall under
Ans: 4
During which of the following stages does the incident commander establish
and enforce scene control perimeters?
A. Analysis stage
B. Evaluation stage
C. Implementation stage
D. Processing and/or planning stage
Pretest - Stuvia US
