HAZMAT TECH I 190 EXAM QUESTIONS & CORRECT
ANSWERS LATEST 2025
Technician Level Personnel/Hazardous Materials Technician - ANSWER-shall be
that
person who responds to hazardous materials/WMD incidents using a risk-based
response process to analyze a problem involving hazardous materials/WMD, plan
a response to the problem, implement the planned response, evaluate progress
of the planned response and accordingly, and assist in terminating the incident
Goals of Hazmat Technician (APIET) - ANSWER-- Analyze a hazardous
material/WMD incident to identify the complexity of the problem and potential
outcomes
- Plan a response within the capabilities of available personnel, PPE, and
equipment
- Implement the planned response
- Evaluate the effectiveness of the response
- Terminate the incident
Biological (Etiological) Hazards - ANSWER-microorganisms, such as viruses or
bacteria (or their toxins), that may cause severe, disabling disease or illness
Corrosives Hazards - ANSWER-- are materials that destroy living tissue and
damage or destroy metal
- Two categories: acids and bases
,Explosivity - ANSWER-is any substance or article with a great deal of potential
energy that may rapidly expand and release upon activation (undergo an
explosion)
Reactivity - ANSWER-describes its relative ability to undergo a chemical reaction
with itself or other materials
Radioactivity - ANSWER-- The least energetic form of radiation is nonionizing
radiation such as visible light and radio waves.
- The most energetic (and hazardous) form of radiation is ionizing radiation
Flammability - ANSWER-Fuels susceptibility to ignition
Normal Atmospheric Conditions - ANSWER-19.5%-23.5%
Oxygen Deficient - ANSWER-19.5%
Oxygen Enriched - ANSWER-23.5%
Thermal Hazard - Heat - ANSWER-•Hazardous material can cause temperature
extremes.
•Fires, explosions involving flammable liquids, explosive materials can cause
burns
, Thermal Hazard - Cold - ANSWER-•Lack of heat can also cause harm; cryogenic
liquids, liquefied gases are so cold that if contacted, they can cause damage,
injuries.
•Cold atmospheric temperatures can complicate many hazmat operations
Toxicity - ANSWER-Chemicals or biological substances that cause sickness, illness,
or injury by doing damage on the molecular scale when in contact with the body
T/F: The state of matter of the material being sampled will affect the monitoring
and detection techniques and devices used - ANSWER-True
Most gases ____ and _______ air - ANSWER-sink; displace
To properly determine concentrations of different gases, operate monitoring and
detection devices - ANSWER-- At different heights within a room/area
- At different grades within a building
Verify monitoring and sampling results when possible by using - ANSWER-- More
than one sampling method
- More than one technology
When dealing with unknown materials or substances - ANSWER-Take an analytic
approach in attempting to identify and characterize hazards
Always assume _____ ______ ______ hazard is present - ANSWER-more than one
ANSWERS LATEST 2025
Technician Level Personnel/Hazardous Materials Technician - ANSWER-shall be
that
person who responds to hazardous materials/WMD incidents using a risk-based
response process to analyze a problem involving hazardous materials/WMD, plan
a response to the problem, implement the planned response, evaluate progress
of the planned response and accordingly, and assist in terminating the incident
Goals of Hazmat Technician (APIET) - ANSWER-- Analyze a hazardous
material/WMD incident to identify the complexity of the problem and potential
outcomes
- Plan a response within the capabilities of available personnel, PPE, and
equipment
- Implement the planned response
- Evaluate the effectiveness of the response
- Terminate the incident
Biological (Etiological) Hazards - ANSWER-microorganisms, such as viruses or
bacteria (or their toxins), that may cause severe, disabling disease or illness
Corrosives Hazards - ANSWER-- are materials that destroy living tissue and
damage or destroy metal
- Two categories: acids and bases
,Explosivity - ANSWER-is any substance or article with a great deal of potential
energy that may rapidly expand and release upon activation (undergo an
explosion)
Reactivity - ANSWER-describes its relative ability to undergo a chemical reaction
with itself or other materials
Radioactivity - ANSWER-- The least energetic form of radiation is nonionizing
radiation such as visible light and radio waves.
- The most energetic (and hazardous) form of radiation is ionizing radiation
Flammability - ANSWER-Fuels susceptibility to ignition
Normal Atmospheric Conditions - ANSWER-19.5%-23.5%
Oxygen Deficient - ANSWER-19.5%
Oxygen Enriched - ANSWER-23.5%
Thermal Hazard - Heat - ANSWER-•Hazardous material can cause temperature
extremes.
•Fires, explosions involving flammable liquids, explosive materials can cause
burns
, Thermal Hazard - Cold - ANSWER-•Lack of heat can also cause harm; cryogenic
liquids, liquefied gases are so cold that if contacted, they can cause damage,
injuries.
•Cold atmospheric temperatures can complicate many hazmat operations
Toxicity - ANSWER-Chemicals or biological substances that cause sickness, illness,
or injury by doing damage on the molecular scale when in contact with the body
T/F: The state of matter of the material being sampled will affect the monitoring
and detection techniques and devices used - ANSWER-True
Most gases ____ and _______ air - ANSWER-sink; displace
To properly determine concentrations of different gases, operate monitoring and
detection devices - ANSWER-- At different heights within a room/area
- At different grades within a building
Verify monitoring and sampling results when possible by using - ANSWER-- More
than one sampling method
- More than one technology
When dealing with unknown materials or substances - ANSWER-Take an analytic
approach in attempting to identify and characterize hazards
Always assume _____ ______ ______ hazard is present - ANSWER-more than one
