Fire Fighter 2 - Hazmat Prep
Exam Study Guide – Practice
Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update
Which statement about radiation is correct? - Answer✔✔-Nonionizing
radiation causes chemical changes at the atomic level.
What is the term for a catastrophic failure of a pressurized cylinder of liquid? -
Answer✔✔-BLEVE
What is used as a measurement of the corrosive strength of a substance? -
Answer✔✔-pH
What is one of the most important aspects to consider when looking at the fire
potential of a flammable liquid? - Answer✔✔-Flammable range
What is secondary contamination? - Answer✔✔-A contaminated person or
object contaminating someone else, such as a rescuer
,When the letters LD or LC are followed by a number, what does that number
indicate? - Answer✔✔-The percentage of test subjects that will die when
exposed to a specified amount
What is the vapor density of air? - Answer✔✔-1
How is flammable range related to the relative danger of a substance? -
Answer✔✔-The wider the range, the more dangerous the substance is.
Which term refers to the concentration of a gas or vapor in air that will burn if
provided with a source of ignition? - Answer✔✔-Flammable range
How does the vapor pressure of a liquid relate to its rate of evaporation? -
Answer✔✔-The greater the vapor pressure, the faster a liquid will evaporate.
What is the temperature at which a liquid fuel gives off sufficient vapor such
that when an ignition source is present the vapors will ignite? - Answer✔✔-
Flash point
Which of the following is the best example of secondary contamination? -
Answer✔✔-Contact with tools and equipment used to control a leak
What is the term for the process by which people, animals, the environment,
and equipment are subjected to contact with a hazardous material? -
Answer✔✔-Exposure
__________ is to liquids as vapor density is to gases. - Answer✔✔-Specific
gravity
, Under what circumstances are alpha particles the most harmful to the human
body? - Answer✔✔-When they are ingested or inhaled
How would a fuel/air mixture in which there is too much fuel be described? -
Answer✔✔-Too rich
What type of changes can chemicals undergo when subjected to outside
influences, such as heat, cold, and pressure? - Answer✔✔-Physical
Flammable liquids with low boiling points are dangerous because: -
Answer✔✔-they may produce large volumes of flammable vapor at relatively
low temperatures.
How would a fuel/air mixture in which there is not enough fuel be described? -
Answer✔✔-Too lean
Which particle has a negative electrical charge? - Answer✔✔-Electron
A change in the state of a material is known as a __________ change. -
Answer✔✔-physical
Which is the most energetic type of radiation? - Answer✔✔-Gamma
What is the term for the ability of a substance to dissolve in water? -
Answer✔✔-Water solubility
Exam Study Guide – Practice
Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update
Which statement about radiation is correct? - Answer✔✔-Nonionizing
radiation causes chemical changes at the atomic level.
What is the term for a catastrophic failure of a pressurized cylinder of liquid? -
Answer✔✔-BLEVE
What is used as a measurement of the corrosive strength of a substance? -
Answer✔✔-pH
What is one of the most important aspects to consider when looking at the fire
potential of a flammable liquid? - Answer✔✔-Flammable range
What is secondary contamination? - Answer✔✔-A contaminated person or
object contaminating someone else, such as a rescuer
,When the letters LD or LC are followed by a number, what does that number
indicate? - Answer✔✔-The percentage of test subjects that will die when
exposed to a specified amount
What is the vapor density of air? - Answer✔✔-1
How is flammable range related to the relative danger of a substance? -
Answer✔✔-The wider the range, the more dangerous the substance is.
Which term refers to the concentration of a gas or vapor in air that will burn if
provided with a source of ignition? - Answer✔✔-Flammable range
How does the vapor pressure of a liquid relate to its rate of evaporation? -
Answer✔✔-The greater the vapor pressure, the faster a liquid will evaporate.
What is the temperature at which a liquid fuel gives off sufficient vapor such
that when an ignition source is present the vapors will ignite? - Answer✔✔-
Flash point
Which of the following is the best example of secondary contamination? -
Answer✔✔-Contact with tools and equipment used to control a leak
What is the term for the process by which people, animals, the environment,
and equipment are subjected to contact with a hazardous material? -
Answer✔✔-Exposure
__________ is to liquids as vapor density is to gases. - Answer✔✔-Specific
gravity
, Under what circumstances are alpha particles the most harmful to the human
body? - Answer✔✔-When they are ingested or inhaled
How would a fuel/air mixture in which there is too much fuel be described? -
Answer✔✔-Too rich
What type of changes can chemicals undergo when subjected to outside
influences, such as heat, cold, and pressure? - Answer✔✔-Physical
Flammable liquids with low boiling points are dangerous because: -
Answer✔✔-they may produce large volumes of flammable vapor at relatively
low temperatures.
How would a fuel/air mixture in which there is not enough fuel be described? -
Answer✔✔-Too lean
Which particle has a negative electrical charge? - Answer✔✔-Electron
A change in the state of a material is known as a __________ change. -
Answer✔✔-physical
Which is the most energetic type of radiation? - Answer✔✔-Gamma
What is the term for the ability of a substance to dissolve in water? -
Answer✔✔-Water solubility
