HAZMAT OPS 2025 Day 1 Exam Questions and
Answers | Already Passed
Operations Level Responders - ✔✔Personnel who respond to a HAZMAT/WMD incidents for the
purpose of implementing or supporting actions to protect people, property and the environment, are
known as? P. 5
Identify, Plan, Implement and Evaluate - ✔✔When responding to hazardous materials/WMD incidents,
operations level responders shall be able to? P. 5
people, property and the environment - ✔✔The role of the Operations Level Responder is to protect
what? P. 5
Chemical Properties - ✔✔What describes the chemical natures of a material and the behaviors and
interactions that occur at a molecular level? P. 6
Physical Properties - ✔✔Characteristics of a material that doesn't involve chemistry or chemical nature of
the material? P. 6
Acids - ✔✔Has a pH value of less than 7, turns litmus dyes red, and dissolves metals is known as? P. 6
Chemical Reactivity - ✔✔The ability of a material to undergo a chemical change? P. 6
Corrosivity (PH) - ✔✔A substance's tendency to deteriorate in the presence of another substance or
environment? P. 6
Boiling Point - ✔✔The temperature of a substance when the liquid turns into a gas at the surface? P. 6
Flash Point - ✔✔The temperature at which a liquid will give off sufficient vapors that will ignite given an
ignition source? P. 7
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, Upper Explosive Limit (UEL) - ✔✔The maximum vapor to air concentration above which a flame will not
propagate? P. 7
Ignition Temperature/Autoignition Temperature - ✔✔The minimum temperature required to cause self-
sustained combustion in the absence of any source of ignition? P. 7
Lower Explosive Limit (LEL) - ✔✔The minimum concentration of vapor to air below which a flame will
not propagate in the presence of an ignition source? P. 7
Solid, Liquid, and Gas - ✔✔What are the three (3) physical states of matter? P. 8
Particle Size - ✔✔Refers to solids and is expressed in microns or percent passing through a meshed
screen? P. 8
Ionizing Radiation - ✔✔Alpha, Beta, Gamma, and Neutron are types of? P. 9
Specific Gravity - ✔✔Ratio of the weight of a liquid or solid as compared to an equal amount of water? P.
10
Vapor Density - ✔✔Ratio of the weight of a vapor as compared to an equal amount of air? P. 10
Toxic Products of Combustion - ✔✔Combustion may alter the original product, may be less harmful if
produced by nonhazardous materials, or may be more harmful if produced by hazardous materials? P. 10
Vapor Pressure - ✔✔The pressure at a temperature when the vapor and liquid phases of a substance are
in equilibrium in a closed container? P. 11
Polymerization - ✔✔Chemical Reactions in which two or more molecules combine to form larger
molecules, this reaction can often be violent? P. 11
Water Solubility - ✔✔The ability of a material to blend uniformly with another? P. 11
Page 2/5
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Answers | Already Passed
Operations Level Responders - ✔✔Personnel who respond to a HAZMAT/WMD incidents for the
purpose of implementing or supporting actions to protect people, property and the environment, are
known as? P. 5
Identify, Plan, Implement and Evaluate - ✔✔When responding to hazardous materials/WMD incidents,
operations level responders shall be able to? P. 5
people, property and the environment - ✔✔The role of the Operations Level Responder is to protect
what? P. 5
Chemical Properties - ✔✔What describes the chemical natures of a material and the behaviors and
interactions that occur at a molecular level? P. 6
Physical Properties - ✔✔Characteristics of a material that doesn't involve chemistry or chemical nature of
the material? P. 6
Acids - ✔✔Has a pH value of less than 7, turns litmus dyes red, and dissolves metals is known as? P. 6
Chemical Reactivity - ✔✔The ability of a material to undergo a chemical change? P. 6
Corrosivity (PH) - ✔✔A substance's tendency to deteriorate in the presence of another substance or
environment? P. 6
Boiling Point - ✔✔The temperature of a substance when the liquid turns into a gas at the surface? P. 6
Flash Point - ✔✔The temperature at which a liquid will give off sufficient vapors that will ignite given an
ignition source? P. 7
Page 1/5
Crafted for Academic Insight by KatelynWhitman. All rights reserved © 2025
, Upper Explosive Limit (UEL) - ✔✔The maximum vapor to air concentration above which a flame will not
propagate? P. 7
Ignition Temperature/Autoignition Temperature - ✔✔The minimum temperature required to cause self-
sustained combustion in the absence of any source of ignition? P. 7
Lower Explosive Limit (LEL) - ✔✔The minimum concentration of vapor to air below which a flame will
not propagate in the presence of an ignition source? P. 7
Solid, Liquid, and Gas - ✔✔What are the three (3) physical states of matter? P. 8
Particle Size - ✔✔Refers to solids and is expressed in microns or percent passing through a meshed
screen? P. 8
Ionizing Radiation - ✔✔Alpha, Beta, Gamma, and Neutron are types of? P. 9
Specific Gravity - ✔✔Ratio of the weight of a liquid or solid as compared to an equal amount of water? P.
10
Vapor Density - ✔✔Ratio of the weight of a vapor as compared to an equal amount of air? P. 10
Toxic Products of Combustion - ✔✔Combustion may alter the original product, may be less harmful if
produced by nonhazardous materials, or may be more harmful if produced by hazardous materials? P. 10
Vapor Pressure - ✔✔The pressure at a temperature when the vapor and liquid phases of a substance are
in equilibrium in a closed container? P. 11
Polymerization - ✔✔Chemical Reactions in which two or more molecules combine to form larger
molecules, this reaction can often be violent? P. 11
Water Solubility - ✔✔The ability of a material to blend uniformly with another? P. 11
Page 2/5
Crafted for Academic Insight by KatelynWhitman. All rights reserved © 2025
