MFRI HAZMAT STUDY ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
● What does the Hazmat Branch Director manage?. Answer: Manage all tactical
operations carried out within the hazard-control zone. Site safety, rescue, backup team, entry
ops, decon, sampling,
● Who does the Hazmat logistics officer report to?. Answer: Directly to the Hazmat
Branch Director and all others assigned to Hazmat Branch
● Who does the Safe Refuge Area Management report to?. Answer: Directly to the Site
Access Control Leader and works closely with Entry and Decon Leaders along with the
Medical Officer
● What is an important consideration regarding the state of some matter?. Answer:
Largely dependant on the temperature of a substance
● What is NIOSH RGasD measurement?. Answer: NIOSH RGasD (Relative gas density)
measurement is identical to vapor density. NIOSH defines RGasD as the relative density of
gases referenced (Compared) to air, where air=l
● What is odor threshold?. Answer: Is the lowest concentration at which most people can
smell it
● What two items are directly proportional? As a result what happens when
temperature of matter increases?. Answer: Temperature and pressure are directly
proportional to one another: as temperature increases and decreases, pressure does the
same. As temperature of matter increases so does the speed
● What is conduction?. Answer: Is the transfer of heat through direct contact between solids
● What is convection?. Answer: Is the transfer of thermal energy by the circulation or
movement of a fluid (liquid or gas)
● What is radiation?. Answer: The transmission of energy as an electromagnetic wave
without an intervening medium
● What is temperature?. Answer: Is a measure of the particles average kinetic energy
typically measured by a thermometer
, ● What is vapor pressure?. Answer: Is the measurement of the ability of a material to
evaporate or change from a liquid to a vapor or gaseous state
● What is auto-refrigeration?. Answer: A method of cooling a effect or reducing vapor
pressure
● What is critical temperature?. Answer: Minimum temperature above which a gas cannot
be liquefied no matter how much pressure is applied
● What is critical pressure?. Answer: The pressure necessary to liquefy a gas at its critical
temperature
● What is self-accelerating decomposition temperature (SADT)?. Answer: Temperature
above which the decomposition of an unstable substance continues unimpeded regardless of
the ambient or external temperature
● What is Maximum safe storage temperature?. Answer: The maximum safe temperature
at which a product can be stored. This temperature will be below the SADT
● What is self-accelerating polymerization temperature (SAPT}?. Answer: Temperature
at which a monomer will undergo polymerization regardless of any inhibitor
● What is melting point?. Answer: Temperature at which a solid transforms into a liquid
● What is freezing point?. Answer: Temperature at which a liquid will solidify or crystallize
● What is evaporation?. Answer: A surface phenomenon in which molecules located near
the liquid's edge escape into the atmosphere as vapor
● What is condensation?. Answer: The conversion of a vapor into a liquid as it cools down
to or below the liquid's boiling point
● What is sublimation?. Answer: The transformation of material from a solid into a gas or
vapor without passing through a liquid state
● What is miscibility?. Answer: A special term for when a liquid or gas completely dissolve
in another liquid or gas
● What do soluble materials do?. Answer: Soluble materials will dissolve in a liquid
● What is solubility?. Answer: Refers to the polarity of the solute in relation to the polarity of
the solvent
QUESTIONS WITH ANSWERS GRADED A+
● What does the Hazmat Branch Director manage?. Answer: Manage all tactical
operations carried out within the hazard-control zone. Site safety, rescue, backup team, entry
ops, decon, sampling,
● Who does the Hazmat logistics officer report to?. Answer: Directly to the Hazmat
Branch Director and all others assigned to Hazmat Branch
● Who does the Safe Refuge Area Management report to?. Answer: Directly to the Site
Access Control Leader and works closely with Entry and Decon Leaders along with the
Medical Officer
● What is an important consideration regarding the state of some matter?. Answer:
Largely dependant on the temperature of a substance
● What is NIOSH RGasD measurement?. Answer: NIOSH RGasD (Relative gas density)
measurement is identical to vapor density. NIOSH defines RGasD as the relative density of
gases referenced (Compared) to air, where air=l
● What is odor threshold?. Answer: Is the lowest concentration at which most people can
smell it
● What two items are directly proportional? As a result what happens when
temperature of matter increases?. Answer: Temperature and pressure are directly
proportional to one another: as temperature increases and decreases, pressure does the
same. As temperature of matter increases so does the speed
● What is conduction?. Answer: Is the transfer of heat through direct contact between solids
● What is convection?. Answer: Is the transfer of thermal energy by the circulation or
movement of a fluid (liquid or gas)
● What is radiation?. Answer: The transmission of energy as an electromagnetic wave
without an intervening medium
● What is temperature?. Answer: Is a measure of the particles average kinetic energy
typically measured by a thermometer
, ● What is vapor pressure?. Answer: Is the measurement of the ability of a material to
evaporate or change from a liquid to a vapor or gaseous state
● What is auto-refrigeration?. Answer: A method of cooling a effect or reducing vapor
pressure
● What is critical temperature?. Answer: Minimum temperature above which a gas cannot
be liquefied no matter how much pressure is applied
● What is critical pressure?. Answer: The pressure necessary to liquefy a gas at its critical
temperature
● What is self-accelerating decomposition temperature (SADT)?. Answer: Temperature
above which the decomposition of an unstable substance continues unimpeded regardless of
the ambient or external temperature
● What is Maximum safe storage temperature?. Answer: The maximum safe temperature
at which a product can be stored. This temperature will be below the SADT
● What is self-accelerating polymerization temperature (SAPT}?. Answer: Temperature
at which a monomer will undergo polymerization regardless of any inhibitor
● What is melting point?. Answer: Temperature at which a solid transforms into a liquid
● What is freezing point?. Answer: Temperature at which a liquid will solidify or crystallize
● What is evaporation?. Answer: A surface phenomenon in which molecules located near
the liquid's edge escape into the atmosphere as vapor
● What is condensation?. Answer: The conversion of a vapor into a liquid as it cools down
to or below the liquid's boiling point
● What is sublimation?. Answer: The transformation of material from a solid into a gas or
vapor without passing through a liquid state
● What is miscibility?. Answer: A special term for when a liquid or gas completely dissolve
in another liquid or gas
● What do soluble materials do?. Answer: Soluble materials will dissolve in a liquid
● What is solubility?. Answer: Refers to the polarity of the solute in relation to the polarity of
the solvent
