Texas Hazardous Materials Technician
Licensing Exam – Test Questions And Correct
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download Pdf
1.
What is the primary responsibility of a Hazardous Materials Technician at an
incident scene?
A) Evacuating civilians
B) Providing emergency medical care
C) Stopping the release of hazardous substances
D) Directing traffic
Answer: C) Stopping the release of hazardous substances
Rationale:Technicians are trained to approach, contain, and stop hazardous
material releases using specialized skills and protective equipment.
2.
Which of the following is a Level A protective suit primarily designed to provide?
A) Splash protection only
B) Maximum vapor and chemical protection
C) Fire resistance only
D) Minimal respiratory protection
Answer: B) Maximum vapor and chemical protection
Rationale:Level A protection includes a fully encapsulated suit and SCBA, offering the
highest level of respiratory, skin, and eye protection.
3.
,The Emergency Response Guidebook (ERG) is most useful during which phase of
a hazardous materials incident?
A) Termination
B) Mitigation
C) Initial response
D) Recovery
Answer: C) Initial response
Rationale:The ERG provides first responders with quick reference data for initial
identification, protective distances, and immediate actions.
4.
Which U.S. agency regulates the transportation of hazardous materials?
A) OSHA
B) EPA
C) DOT
D) NRC
Answer: C) DOT
Rationale:The U.S. Department of Transportation oversees labeling, placarding,
and safe movement of hazardous materials in commerce.
5.
What does the red quadrant on the NFPA 704 diamond represent?
A) Health hazard
B) Flammability hazard
C) Reactivity hazard
D) Special information
Answer: B) Flammability hazard
Rationale:The NFPA 704 red section indicates flammability risk on a 0–4 scale, with
higher numbers meaning greater hazard.
,6.
When approaching a hazardous material spill, technicians should:
A) Approach from uphill and upwind
B) Approach directly downwind
C) Approach from the lowest point
D) Approach quickly to save time
Answer: A) Approach from uphill and upwind
Rationale:Approaching from uphill and upwind reduces exposure to vapors and
liquids.
7.
A material with a pH of 2 is considered:
A) Neutral
B) Weakly alkaline
C) Strongly acidic
D) Strongly alkaline
Answer: C) Strongly acidic
Rationale:The pH scale below 7 indicates acidity; 2 is considered strongly acidic and
highly corrosive.
8.
Which federal regulation covers worker safety related to hazardous materials?
A) 29 CFR 1910.120
B) 40 CFR Part 261
C) 49 CFR Part 172
D) 29 CFR 1910.134
Answer: A) 29 CFR 1910.120
Rationale:This is OSHA’s HAZWOPER standard, which governs hazardous waste
operations
and emergency response.
9.
, Which of the following is a sign of chlorine gas exposure?
A) Sweet taste in mouth
B) Severe eye irritation and coughing
C) Metallic taste
D) Skin blistering only
Answer: B) Severe eye irritation and coughing
Rationale:Chlorine gas causes burning eyes, coughing, chest tightness, and
respiratory distress.
10.
What is the minimum respiratory protection required for a technician entering an
IDLH (Immediately Dangerous to Life and Health) environment?
A) Air-purifying respirator
B) SCBA (Self-Contained Breathing Apparatus)
C) N95 mask
D) Powered Air-Purifying Respirator (PAPR)
Answer: B) SCBA (Self-Contained Breathing Apparatus)
Rationale:An SCBA provides an independent air supply, making it essential for
IDLH atmospheres.
11.
What is the most reliable method to identify an unknown hazardous substance at
an incident scene?
A) Container shape and size
B) Shipping papers and labels
C) Smelling the substance
D) Asking bystanders
Answer: B) Shipping papers and labels
Rationale:Shipping papers, placards, and labels provide regulatory identification
and are safer and more reliable than sensory methods.
Licensing Exam – Test Questions And Correct
Answers (Verified Answers) Plus Rationales
2025/2026 Q&A | Instant Download Pdf
1.
What is the primary responsibility of a Hazardous Materials Technician at an
incident scene?
A) Evacuating civilians
B) Providing emergency medical care
C) Stopping the release of hazardous substances
D) Directing traffic
Answer: C) Stopping the release of hazardous substances
Rationale:Technicians are trained to approach, contain, and stop hazardous
material releases using specialized skills and protective equipment.
2.
Which of the following is a Level A protective suit primarily designed to provide?
A) Splash protection only
B) Maximum vapor and chemical protection
C) Fire resistance only
D) Minimal respiratory protection
Answer: B) Maximum vapor and chemical protection
Rationale:Level A protection includes a fully encapsulated suit and SCBA, offering the
highest level of respiratory, skin, and eye protection.
3.
,The Emergency Response Guidebook (ERG) is most useful during which phase of
a hazardous materials incident?
A) Termination
B) Mitigation
C) Initial response
D) Recovery
Answer: C) Initial response
Rationale:The ERG provides first responders with quick reference data for initial
identification, protective distances, and immediate actions.
4.
Which U.S. agency regulates the transportation of hazardous materials?
A) OSHA
B) EPA
C) DOT
D) NRC
Answer: C) DOT
Rationale:The U.S. Department of Transportation oversees labeling, placarding,
and safe movement of hazardous materials in commerce.
5.
What does the red quadrant on the NFPA 704 diamond represent?
A) Health hazard
B) Flammability hazard
C) Reactivity hazard
D) Special information
Answer: B) Flammability hazard
Rationale:The NFPA 704 red section indicates flammability risk on a 0–4 scale, with
higher numbers meaning greater hazard.
,6.
When approaching a hazardous material spill, technicians should:
A) Approach from uphill and upwind
B) Approach directly downwind
C) Approach from the lowest point
D) Approach quickly to save time
Answer: A) Approach from uphill and upwind
Rationale:Approaching from uphill and upwind reduces exposure to vapors and
liquids.
7.
A material with a pH of 2 is considered:
A) Neutral
B) Weakly alkaline
C) Strongly acidic
D) Strongly alkaline
Answer: C) Strongly acidic
Rationale:The pH scale below 7 indicates acidity; 2 is considered strongly acidic and
highly corrosive.
8.
Which federal regulation covers worker safety related to hazardous materials?
A) 29 CFR 1910.120
B) 40 CFR Part 261
C) 49 CFR Part 172
D) 29 CFR 1910.134
Answer: A) 29 CFR 1910.120
Rationale:This is OSHA’s HAZWOPER standard, which governs hazardous waste
operations
and emergency response.
9.
, Which of the following is a sign of chlorine gas exposure?
A) Sweet taste in mouth
B) Severe eye irritation and coughing
C) Metallic taste
D) Skin blistering only
Answer: B) Severe eye irritation and coughing
Rationale:Chlorine gas causes burning eyes, coughing, chest tightness, and
respiratory distress.
10.
What is the minimum respiratory protection required for a technician entering an
IDLH (Immediately Dangerous to Life and Health) environment?
A) Air-purifying respirator
B) SCBA (Self-Contained Breathing Apparatus)
C) N95 mask
D) Powered Air-Purifying Respirator (PAPR)
Answer: B) SCBA (Self-Contained Breathing Apparatus)
Rationale:An SCBA provides an independent air supply, making it essential for
IDLH atmospheres.
11.
What is the most reliable method to identify an unknown hazardous substance at
an incident scene?
A) Container shape and size
B) Shipping papers and labels
C) Smelling the substance
D) Asking bystanders
Answer: B) Shipping papers and labels
Rationale:Shipping papers, placards, and labels provide regulatory identification
and are safer and more reliable than sensory methods.
