Practice Exam Questions And Correct
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Rationales 2025|2026 Q&A | Instant
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1. Which level of protection provides the highest respiratory and skin
protection?
a) Level C
b) Level D
c) Level A
d) Level B
Level A suits provide full vapor-tight protection with self-contained
breathing apparatus, offering the highest respiratory and skin
protection.
,2. Which regulation governs hazardous waste from “cradle to grave”?
a) OSHA 1910.120
b) RCRA
c) CERCLA
d) TSCA
The Resource Conservation and Recovery Act (RCRA) ensures
hazardous waste is tracked from generation through disposal.
3. What is the first step in the eight-step HAZMAT response sequence?
a) Site management and control
b) Hazard and risk assessment
c) Information management
d) Implement response objectives
Site management and control ensures responder safety by
establishing zones and command structure before operations.
4. Which organization developed the Emergency Response Guidebook
(ERG)?
a) OSHA
b) NFPA
c) DOT
d) FEMA
The U.S. Department of Transportation publishes the ERG to assist in
initial response to hazardous materials incidents.
,5. Which type of monitoring detects flammable vapors?
a) Photoionization detector
b) Combustible gas indicator (CGI)
c) Radiation dosimeter
d) Colorimetric tubes
A combustible gas indicator measures concentrations of flammable
vapors relative to the lower explosive limit.
6. A placard with a skull and crossbones indicates which hazard class?
a) Class 3
b) Class 6
c) Class 4
d) Class 7
Class 6 materials are toxic substances, often represented with the
skull and crossbones symbol.
7. The OSHA HAZWOPER standard is found in which regulation?
a) 29 CFR 1910.120
b) 29 CFR 1926.65
c) 40 CFR 261
d) 49 CFR 172
29 CFR 1910.120 is the HAZWOPER standard that governs hazardous
waste operations and emergency response.
8. Which NFPA standard covers competencies for hazardous materials
technicians?
, a) NFPA 1991
b) NFPA 472
c) NFPA 1584
d) NFPA 1001
NFPA 472 sets professional competence standards for responders to
hazardous materials incidents.
9. Which level of PPE is typically worn when the type of airborne
substance is known and measured, and an APR can be used?
a) Level A
b) Level B
c) Level C
d) Level D
Level C protection uses air-purifying respirators when contaminants
and concentrations are identified and controlled.
10. Which zone is directly adjacent to the hot zone and used for
decontamination?
a) Hot zone
b) Warm zone
c) Cold zone
d) Command zone
The warm zone is designated for decontamination and transition
between hot and cold zones.