1|Page
HAZMAT Tech I EXAM| ALL QUESTIONS
AND CORRECT ANSWERS |ALREADY
GRADED A+ | VERIFIED ANSWERS | LATEST
VERSION 2025 | BRAND NEW VERSION
the pressure that must be applied to bring a gas to its liquid state
........answer.......critical pressure
the separation of a substance into two or more simpler substances,
or of a molecule into atoms or ions by the action of heat or
chemical process, this is usually reversible
........answer.......Dissociation
a measure of a substance's tendency to deteriorate in the presence
of another substance or in a particular environment
........answer.......Corrosive
the concentration or amount of material to which the body is
exposed to over a specific time period ........answer.......dose
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the biological reaction caused by the dose in the body, it is directly
related to the dose and its impact on bodily functions
........answer.......dose response
the amount of gas produced by a given volume of liquid at a given
temperature ........answer.......Expansion ratio
the minimum temp at which a material gives off vapor in sufficient
concentration to form an ignitable mixture with air and will not
continue to burn ........answer.......flash point
the temp at which enough vapors are given off to support
continuous burning ........answer.......fire point
the difference between the upper and lower flammable limits
........answer.......flammable range
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the minimum concentration of vapor to air below which a flame
will not propagate in the presence of an ignition source, "too lean
to burn" ........answer.......lower explosive limit (LEL)
the maximum vapor to air concentration above which a flame will
not propagate, "too rich to burn" ........answer.......Upper explosive
limit (UEL)
the period of time it takes for a substance undergoing decay to
decrease by half ........answer.......half-life
subgroup of aromatic hydrocarbons, in which one of the hydrogen
molecules is substituted by a halogen group
........answer.......Halogenated Hydrocarbon
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Any substance whose aqueous solutions are characterized by a sour
taste, they turn litmus dye red, react with bases and certain metals
to form salts, pH < 7 in its standard state ........answer.......Acid
capable of burning, corroding, dissolving, or eating away by
chemical action, pH > 7 in its standard state
........answer.......Caustic
Materials that can react or ignite if they are exposed to air
........answer.......Air Reactivity
The rapid release of a liquefied gas that causes it to temporarily
remain in liquid state through rapid cooling ........answer.......Auto-
refrigeration
false assumption of product elimination until the product resumes
boiling and subsequent release ........answer.......What is a risk of
Auto-refrigeration
HAZMAT Tech I EXAM| ALL QUESTIONS
AND CORRECT ANSWERS |ALREADY
GRADED A+ | VERIFIED ANSWERS | LATEST
VERSION 2025 | BRAND NEW VERSION
the pressure that must be applied to bring a gas to its liquid state
........answer.......critical pressure
the separation of a substance into two or more simpler substances,
or of a molecule into atoms or ions by the action of heat or
chemical process, this is usually reversible
........answer.......Dissociation
a measure of a substance's tendency to deteriorate in the presence
of another substance or in a particular environment
........answer.......Corrosive
the concentration or amount of material to which the body is
exposed to over a specific time period ........answer.......dose
,2|Page
the biological reaction caused by the dose in the body, it is directly
related to the dose and its impact on bodily functions
........answer.......dose response
the amount of gas produced by a given volume of liquid at a given
temperature ........answer.......Expansion ratio
the minimum temp at which a material gives off vapor in sufficient
concentration to form an ignitable mixture with air and will not
continue to burn ........answer.......flash point
the temp at which enough vapors are given off to support
continuous burning ........answer.......fire point
the difference between the upper and lower flammable limits
........answer.......flammable range
,3|Page
the minimum concentration of vapor to air below which a flame
will not propagate in the presence of an ignition source, "too lean
to burn" ........answer.......lower explosive limit (LEL)
the maximum vapor to air concentration above which a flame will
not propagate, "too rich to burn" ........answer.......Upper explosive
limit (UEL)
the period of time it takes for a substance undergoing decay to
decrease by half ........answer.......half-life
subgroup of aromatic hydrocarbons, in which one of the hydrogen
molecules is substituted by a halogen group
........answer.......Halogenated Hydrocarbon
, 4|Page
Any substance whose aqueous solutions are characterized by a sour
taste, they turn litmus dye red, react with bases and certain metals
to form salts, pH < 7 in its standard state ........answer.......Acid
capable of burning, corroding, dissolving, or eating away by
chemical action, pH > 7 in its standard state
........answer.......Caustic
Materials that can react or ignite if they are exposed to air
........answer.......Air Reactivity
The rapid release of a liquefied gas that causes it to temporarily
remain in liquid state through rapid cooling ........answer.......Auto-
refrigeration
false assumption of product elimination until the product resumes
boiling and subsequent release ........answer.......What is a risk of
Auto-refrigeration
