HAZWOPER 40 Hour Training Exam
Questions and Answers (Latest
Update 2026)
Additive Chemical Reaction -
correct answer ✅This occurs when toxic chemicals add their
effects together in producing a biological effect.
Antagonism -
correct answer ✅This occurs when the effect of two chemicals is
less than expected.
Asphyxiants -
correct answer ✅These are chemicals that deprive the victim\'s
body tissues of oxygen. Examples include carbon monoxide and
hydrogen cyanide.
Carcinogens -
correct answer ✅These are known to cause cancer. This is a
chronic effect and symptoms are not immediate. Examples include
benzene and asbestos fibers.
Code of Federal Regulations (CFR) -
correct answer ✅This lists the general and permanent rules of
federal agencies.
,HAZWOPER 40 Hour Training Exam
Questions and Answers (Latest
Update 2026)
Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) -
correct answer ✅This regulates and enforces the cleanup of
abandoned hazardous waste sites and hazardous waste sites
created prior to RCRA.
Contamination Reduction Corridor (CRC) -
correct answer ✅This is the passageway between the Exclusion
Zone and the Support Zone used for the decontamination process.
OSHA letters and CPLs call the corridor a zone.
Contamination Reduction Zone (CRZ) -
correct answer ✅This is a warm zone or transition zone. Its
purpose is to reduce the probability of contamination in the clean
Support Zone.
Contingency plan -
correct answer ✅This is a written document that sets forth policies
and procedures for responding to site emergencies.
, HAZWOPER 40 Hour Training Exam
Questions and Answers (Latest
Update 2026)
Corrosive material -
correct answer ✅A chemical that causes visible destruction of, or
irreversible alterations in, living tissue by chemical action at the site
of contact.
Decontamination (Decon) -
correct answer ✅This is the process of removing or neutralizing
contaminants that have accumulated on personnel and equipment.
Ergonomics -
correct answer ✅This is the term that refers to arranging the work
environment for an individual\'s body requirements. It involves
designing tasks, work stations, controls, displays, safety devices,
tools, and equipment to fit the worker.
Excavation -
correct answer ✅Means any man-made cut, cavity, trench, or
depression in an earth surface, formed by earth removal.
Exclusion zone -
correct answer ✅This is the contaminated area where the cleanup
work is to be performed.
Questions and Answers (Latest
Update 2026)
Additive Chemical Reaction -
correct answer ✅This occurs when toxic chemicals add their
effects together in producing a biological effect.
Antagonism -
correct answer ✅This occurs when the effect of two chemicals is
less than expected.
Asphyxiants -
correct answer ✅These are chemicals that deprive the victim\'s
body tissues of oxygen. Examples include carbon monoxide and
hydrogen cyanide.
Carcinogens -
correct answer ✅These are known to cause cancer. This is a
chronic effect and symptoms are not immediate. Examples include
benzene and asbestos fibers.
Code of Federal Regulations (CFR) -
correct answer ✅This lists the general and permanent rules of
federal agencies.
,HAZWOPER 40 Hour Training Exam
Questions and Answers (Latest
Update 2026)
Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) -
correct answer ✅This regulates and enforces the cleanup of
abandoned hazardous waste sites and hazardous waste sites
created prior to RCRA.
Contamination Reduction Corridor (CRC) -
correct answer ✅This is the passageway between the Exclusion
Zone and the Support Zone used for the decontamination process.
OSHA letters and CPLs call the corridor a zone.
Contamination Reduction Zone (CRZ) -
correct answer ✅This is a warm zone or transition zone. Its
purpose is to reduce the probability of contamination in the clean
Support Zone.
Contingency plan -
correct answer ✅This is a written document that sets forth policies
and procedures for responding to site emergencies.
, HAZWOPER 40 Hour Training Exam
Questions and Answers (Latest
Update 2026)
Corrosive material -
correct answer ✅A chemical that causes visible destruction of, or
irreversible alterations in, living tissue by chemical action at the site
of contact.
Decontamination (Decon) -
correct answer ✅This is the process of removing or neutralizing
contaminants that have accumulated on personnel and equipment.
Ergonomics -
correct answer ✅This is the term that refers to arranging the work
environment for an individual\'s body requirements. It involves
designing tasks, work stations, controls, displays, safety devices,
tools, and equipment to fit the worker.
Excavation -
correct answer ✅Means any man-made cut, cavity, trench, or
depression in an earth surface, formed by earth removal.
Exclusion zone -
correct answer ✅This is the contaminated area where the cleanup
work is to be performed.
