Hazmat Operations Test Exam
Questions and Answers 2026
Which resources are available for determining the concentrations of a released
hazardous material in an endangered area? - ANSWER-Monitoring equipment should
be utilized, keeping in mind that Haz-Mat technicians are needed to operate this
equipment.
Chemicals that ignite when combined create a(n) __________ reaction. - ANSWER-
Exothermic
The eight-step process recommended for assessing a hazardous materials incident
includes: - ANSWER-Hazard and Risk evaluation
What would be the likely result of allowing a contaminated individual to leave the hot
zone without being decontaminated? - ANSWER-The contaminates would likely be
transferred to other personal and equipment resulting in secondary contamination.
When dealing with a Level III incident, it is expected that evacuation of people will cover
an area of. - ANSWER-Large scale evacuation.
The minimum temperature to which a fuel in air must be heated to initiate self-sustained
combustion without initiation from an independent ignition source is best described as: -
ANSWER-Auto-ignition Temperature
Which DOT Hazard Class covers nerve agents used in chemical warfare? - ANSWER-
DOT 6.1
At a hazardous materials incident, the assistant safety officer directly reports to the: -
ANSWER-Safety Officer
Symptoms of heat ______ include little or no sweating; hot, dry, red skin, deep then
shallow breathing; and rapid pulse. - ANSWER-Stroke
To protect against radiological exposures a responder should: - ANSWER-Limit the time
spent in a radiation hazard area
Adsorption is the process of: - ANSWER-Adhering the contaminant to a surface
A tank carrier designed to haul various chemicals whose pressures are less than 40 PSI
would be a: - ANSWER-MC 306/DOT 406
, The immediate concern when dealing with combustible liquid spills is to: - ANSWER-
Prevent ignition of the fuel
The highest level of respiratory protection is needed but lesser chemical protection is
required for the skin best describes _______ protection. - ANSWER-Level B
Chemical Transportation Emergency Center (CHEMTREC) is able to provide assistance
to responders if: - ANSWER-The name of the shipper and manufacturer is known
Determining whether a vapor will rise or fall is commonly referred to as: - ANSWER-
Vapor Density
The maximum hose length allowed by NIOSH when using an airline hose respirator is
______ feet. - ANSWER-300
If a product with a vapor density of 1.6 escaped from its container, you would expect the
product to: - ANSWER-Collect in low-lying areas
A person who is repeatedly exposed to a chemical over a long period of time may
develop - ANSWER-Chronic health hazard
The first step or most important thing to accomplish upon arrival at a hazardous
materials or suspected hazardous materials incident is: - ANSWER-Isolation of the area
and prevention of entry
Control of the scene begins by isolating the site. The process for establishing initial
isolation distances can be found: - ANSWER-In the Emergency Response Guidebook
(ERG)
Beta particles can be described as: - ANSWER-Ionizing radiation like x-rays
What type of container is used to ship materials of radioactivity by air? - ANSWER-Type
A
The amount of an ingested substance that results in the death of 50 percent of the test
population best defines: - ANSWER-LD50
An MC 307/DOT 407 low-pressure chemical carrier is designed to carry chemicals with
pressures not to exceed _______ psi. - ANSWER-35-40
caustic sodium hydroxide and potassium hydroxide are examples of: - ANSWER-Bases
The temperature at which a liquid changes to a gas is best described as: - ANSWER-
The Boiling Point
Questions and Answers 2026
Which resources are available for determining the concentrations of a released
hazardous material in an endangered area? - ANSWER-Monitoring equipment should
be utilized, keeping in mind that Haz-Mat technicians are needed to operate this
equipment.
Chemicals that ignite when combined create a(n) __________ reaction. - ANSWER-
Exothermic
The eight-step process recommended for assessing a hazardous materials incident
includes: - ANSWER-Hazard and Risk evaluation
What would be the likely result of allowing a contaminated individual to leave the hot
zone without being decontaminated? - ANSWER-The contaminates would likely be
transferred to other personal and equipment resulting in secondary contamination.
When dealing with a Level III incident, it is expected that evacuation of people will cover
an area of. - ANSWER-Large scale evacuation.
The minimum temperature to which a fuel in air must be heated to initiate self-sustained
combustion without initiation from an independent ignition source is best described as: -
ANSWER-Auto-ignition Temperature
Which DOT Hazard Class covers nerve agents used in chemical warfare? - ANSWER-
DOT 6.1
At a hazardous materials incident, the assistant safety officer directly reports to the: -
ANSWER-Safety Officer
Symptoms of heat ______ include little or no sweating; hot, dry, red skin, deep then
shallow breathing; and rapid pulse. - ANSWER-Stroke
To protect against radiological exposures a responder should: - ANSWER-Limit the time
spent in a radiation hazard area
Adsorption is the process of: - ANSWER-Adhering the contaminant to a surface
A tank carrier designed to haul various chemicals whose pressures are less than 40 PSI
would be a: - ANSWER-MC 306/DOT 406
, The immediate concern when dealing with combustible liquid spills is to: - ANSWER-
Prevent ignition of the fuel
The highest level of respiratory protection is needed but lesser chemical protection is
required for the skin best describes _______ protection. - ANSWER-Level B
Chemical Transportation Emergency Center (CHEMTREC) is able to provide assistance
to responders if: - ANSWER-The name of the shipper and manufacturer is known
Determining whether a vapor will rise or fall is commonly referred to as: - ANSWER-
Vapor Density
The maximum hose length allowed by NIOSH when using an airline hose respirator is
______ feet. - ANSWER-300
If a product with a vapor density of 1.6 escaped from its container, you would expect the
product to: - ANSWER-Collect in low-lying areas
A person who is repeatedly exposed to a chemical over a long period of time may
develop - ANSWER-Chronic health hazard
The first step or most important thing to accomplish upon arrival at a hazardous
materials or suspected hazardous materials incident is: - ANSWER-Isolation of the area
and prevention of entry
Control of the scene begins by isolating the site. The process for establishing initial
isolation distances can be found: - ANSWER-In the Emergency Response Guidebook
(ERG)
Beta particles can be described as: - ANSWER-Ionizing radiation like x-rays
What type of container is used to ship materials of radioactivity by air? - ANSWER-Type
A
The amount of an ingested substance that results in the death of 50 percent of the test
population best defines: - ANSWER-LD50
An MC 307/DOT 407 low-pressure chemical carrier is designed to carry chemicals with
pressures not to exceed _______ psi. - ANSWER-35-40
caustic sodium hydroxide and potassium hydroxide are examples of: - ANSWER-Bases
The temperature at which a liquid changes to a gas is best described as: - ANSWER-
The Boiling Point
