Certification Practice Exam Questions

HAZWOPER 24-Hour Technician Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• 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.

• What is the primary purpose of the HAZWOPER standard?

a) Promote general workplace safety 1 / 4

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.

• 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.

• 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. 2 / 4

• 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.

• 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.

• 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. 3 / 4

• 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.

• 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.

• 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

• / 4