HAZWOPER 24-Hour Technician
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. Which type of hazardous material can spontaneously ignite when
exposed to air?
a) Corrosive
b) Flammable liquid
c) Pyrophoric material
d) Oxidizer
Pyrophoric materials ignite spontaneously in air due to their high
reactivity with oxygen.
2. What is the primary purpose of the HAZWOPER standard?
a) Promote general workplace safety
, b) Prevent minor chemical spills
c) Protect employees from hazardous waste operations and
emergency response
d) Enforce environmental regulations
HAZWOPER specifically addresses safety for employees handling
hazardous waste and responding to hazardous materials
emergencies.
3. What does an SDS (Safety Data Sheet) provide?
a) Marketing information about a chemical
b) Price and supplier data
c) Hazard identification, handling, and emergency measures
d) OSHA inspection schedules
SDS contains detailed information about a chemical’s hazards, safe
handling, storage, and emergency response procedures.
4. Which level of PPE provides the highest level of protection against
hazardous chemicals?
a) Level D
b) Level C
c) Level B
d) Level A
Level A PPE offers fully encapsulating, vapor-tight protection,
providing the maximum chemical resistance.
,5. What is the first step in decontamination?
a) Disposal of waste
b) Removal of gross contaminants from the victim or equipment
c) Documentation
d) PPE selection
Removing bulk contamination prevents further spread and exposure
to hazardous substances.
6. Which type of chemical is most likely to cause tissue burns on contact?
a) Corrosive
b) Flammable
c) Carcinogenic
d) Pyrophoric
Corrosives chemically destroy tissue upon contact, causing burns or
permanent damage.
7. How often must HAZWOPER training be refreshed for 24-hour
technicians?
a) Every 6 months
b) Every 2 years
c) Annually
d) Every 5 years
OSHA requires annual refresher training to ensure technicians remain
up-to-date with safety and emergency procedures.
, 8. What is the primary concern when dealing with compressed gas
cylinders at a hazardous site?
a) Temperature
b) Pressure and physical hazards
c) Color coding
d) Labeling only
Compressed gases are pressurized and can cause explosions, leaks, or
projectiles if mishandled.
9. Which decontamination method is generally used for water-soluble
chemicals?
a) Solvent wipe
b) Water rinse
c) Vacuum extraction
d) UV light
Water rinsing effectively removes soluble chemicals from surfaces
and PPE.
10. What type of chemical exposure primarily affects the respiratory
system?
a) Corrosive liquid on skin
b) Inhalation of toxic vapors or gases
c) Ingestion
d) Contact with eyes
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. Which type of hazardous material can spontaneously ignite when
exposed to air?
a) Corrosive
b) Flammable liquid
c) Pyrophoric material
d) Oxidizer
Pyrophoric materials ignite spontaneously in air due to their high
reactivity with oxygen.
2. What is the primary purpose of the HAZWOPER standard?
a) Promote general workplace safety
, b) Prevent minor chemical spills
c) Protect employees from hazardous waste operations and
emergency response
d) Enforce environmental regulations
HAZWOPER specifically addresses safety for employees handling
hazardous waste and responding to hazardous materials
emergencies.
3. What does an SDS (Safety Data Sheet) provide?
a) Marketing information about a chemical
b) Price and supplier data
c) Hazard identification, handling, and emergency measures
d) OSHA inspection schedules
SDS contains detailed information about a chemical’s hazards, safe
handling, storage, and emergency response procedures.
4. Which level of PPE provides the highest level of protection against
hazardous chemicals?
a) Level D
b) Level C
c) Level B
d) Level A
Level A PPE offers fully encapsulating, vapor-tight protection,
providing the maximum chemical resistance.
,5. What is the first step in decontamination?
a) Disposal of waste
b) Removal of gross contaminants from the victim or equipment
c) Documentation
d) PPE selection
Removing bulk contamination prevents further spread and exposure
to hazardous substances.
6. Which type of chemical is most likely to cause tissue burns on contact?
a) Corrosive
b) Flammable
c) Carcinogenic
d) Pyrophoric
Corrosives chemically destroy tissue upon contact, causing burns or
permanent damage.
7. How often must HAZWOPER training be refreshed for 24-hour
technicians?
a) Every 6 months
b) Every 2 years
c) Annually
d) Every 5 years
OSHA requires annual refresher training to ensure technicians remain
up-to-date with safety and emergency procedures.
, 8. What is the primary concern when dealing with compressed gas
cylinders at a hazardous site?
a) Temperature
b) Pressure and physical hazards
c) Color coding
d) Labeling only
Compressed gases are pressurized and can cause explosions, leaks, or
projectiles if mishandled.
9. Which decontamination method is generally used for water-soluble
chemicals?
a) Solvent wipe
b) Water rinse
c) Vacuum extraction
d) UV light
Water rinsing effectively removes soluble chemicals from surfaces
and PPE.
10. What type of chemical exposure primarily affects the respiratory
system?
a) Corrosive liquid on skin
b) Inhalation of toxic vapors or gases
c) Ingestion
d) Contact with eyes
