HAZMAT OPS EXAM N 250 COMPREHENSIVE
EXAM 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ Non-iodizing Radiation causes.
Answer: genetic dmage to skin cells and results in skin cancer
◉ Non-iodizing Radiation is __________ the control of a
HAZMAT/WMD Responder.
Answer: beyond
◉ Specifics Gravity.
Answer: ratio of the weight of a liquid or solid as compared to an
equal amount of water
◉ solids with values less than 1.0 are considered.
Answer: lighter than water
◉ solids with values more than 1.0 are considered.
Answer: heavier than water
,◉ Toxic Products of Combustion outputs like smoke, steam, and
runoff from fire and firefighting operations may.
Answer: contaminate a larger area and increases the need for
respiratory protection and for evacuation downwind of the fire
◉ Vapor Density.
Answer: ration of the weight of a vapor as compared to an equal
amount of air
◉ Vapor Pressure.
Answer: the pressure at any given temperature at which the vapor
and liquid phases of the substance is in equilibrium in a closed
container
◉ water soluability.
Answer: the ability of a material to blend uniformly (solubility) with
another
◉ Types of Solubility.
Answer: Solid in Liquid (sugar in tea aka sweet tea)
Liquid in Liquid (jack & coke)
Gas in Liquid (carbon dioxide in coke)
Gas in Gas (atmosphere)
,◉ Yes (solubility term).
Answer: is soluble
◉ No (solubility term).
Answer: not sluble
◉ Slight (solubility term).
Answer: partly soluble or will easily saturate the substance
◉ Solubility may be described in....
Answer: percentages
◉ Polymerization.
Answer: chemical reaction in which two or more molecules
chemically combine to form a larger molecule (can often be violent)
◉ Expansion Ratio.
Answer: volume of a substance in liquid form compared to the
volume of the same number of molecules of that substance in gas
form or ratio of finished foam volume to the volume of the original
foam solution
, ◉ Biological Agent.
Answer: viruses, bacteria, or their toxins which are harmful to
people, animals, or crops (when used to deliberately cause harm is a
bio weapon)
◉ Toxin.
Answer: poison produced by living organisms
◉ Contamination.
Answer: direct contact with the material usually as a result of
release
◉ Secondary Contamination.
Answer: indirect transfer, carried contamination away from the hot
zone (usually as a result of contact with others, equipment, or
property that was originally contaminated)
◉ Exposure to HAZMAT.
Answer: not always contaminated by it
◉ People contaminated obviously must have been.
Answer: exposed
EXAM 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ Non-iodizing Radiation causes.
Answer: genetic dmage to skin cells and results in skin cancer
◉ Non-iodizing Radiation is __________ the control of a
HAZMAT/WMD Responder.
Answer: beyond
◉ Specifics Gravity.
Answer: ratio of the weight of a liquid or solid as compared to an
equal amount of water
◉ solids with values less than 1.0 are considered.
Answer: lighter than water
◉ solids with values more than 1.0 are considered.
Answer: heavier than water
,◉ Toxic Products of Combustion outputs like smoke, steam, and
runoff from fire and firefighting operations may.
Answer: contaminate a larger area and increases the need for
respiratory protection and for evacuation downwind of the fire
◉ Vapor Density.
Answer: ration of the weight of a vapor as compared to an equal
amount of air
◉ Vapor Pressure.
Answer: the pressure at any given temperature at which the vapor
and liquid phases of the substance is in equilibrium in a closed
container
◉ water soluability.
Answer: the ability of a material to blend uniformly (solubility) with
another
◉ Types of Solubility.
Answer: Solid in Liquid (sugar in tea aka sweet tea)
Liquid in Liquid (jack & coke)
Gas in Liquid (carbon dioxide in coke)
Gas in Gas (atmosphere)
,◉ Yes (solubility term).
Answer: is soluble
◉ No (solubility term).
Answer: not sluble
◉ Slight (solubility term).
Answer: partly soluble or will easily saturate the substance
◉ Solubility may be described in....
Answer: percentages
◉ Polymerization.
Answer: chemical reaction in which two or more molecules
chemically combine to form a larger molecule (can often be violent)
◉ Expansion Ratio.
Answer: volume of a substance in liquid form compared to the
volume of the same number of molecules of that substance in gas
form or ratio of finished foam volume to the volume of the original
foam solution
, ◉ Biological Agent.
Answer: viruses, bacteria, or their toxins which are harmful to
people, animals, or crops (when used to deliberately cause harm is a
bio weapon)
◉ Toxin.
Answer: poison produced by living organisms
◉ Contamination.
Answer: direct contact with the material usually as a result of
release
◉ Secondary Contamination.
Answer: indirect transfer, carried contamination away from the hot
zone (usually as a result of contact with others, equipment, or
property that was originally contaminated)
◉ Exposure to HAZMAT.
Answer: not always contaminated by it
◉ People contaminated obviously must have been.
Answer: exposed
