FIRE INVESTIGATOR EXAM 2025/2026 QUESTIONS WITH
ANSWERS RATED A+
✔✔An investigator who is worried whether evidence will disintegrate or break is
concerned about its - ✔✔fraility
✔✔Whenever possible, the evidence storage area should be controlled by the - ✔✔fire
investigator
✔✔Most contamination of physical evidence occurs during - ✔✔collection
✔✔The __________ makes the decision on what physical evidence is to be collected -
✔✔fire investigator
✔✔What is the recommended storage method for paper documents - ✔✔manila
envelope; do not fold; wrap securely
✔✔Which is considered an information source for private organizations -
✔✔International Association of Arson Investigators
✔✔While correlating data and evaluating source information, a credible source that
should be considered is - ✔✔public records maintained by the fire department
✔✔With respect to public records, you would obtain what type of information from the
municipal assessor - ✔✔Taxable value of real property
✔✔With respect to public records, you would expect to obtain what type of information
from the County coroner/medical examiner - ✔✔death certificate
✔✔Safety equipment and clothing should be worn by the investigator on the fire scene -
✔✔at all times
✔✔An investigator planning to enter a fire scene prior to complete extinguishment
should first - ✔✔obtain permission from the incident commander
✔✔A method to identify hazardous materials is - ✔✔noting placards and labels
✔✔Prior to starting the investigation, the investigator needs to ensure - ✔✔structural
stability
✔✔The investigator must be aware of standing pools of water on the scene as they may
contain - ✔✔debris that can cause tripping and falling
, ✔✔Solid or liquid aerosols, carbon monoxide, carbon dioxide, oxygen, nitrogen, and
finely divided carbon particles are all incomplete combustion products referred to as -
✔✔smoke
✔✔Diesel engines use the principle of _________ to ignite fuel vapor - ✔✔heat of
compression
✔✔The transition phase during a compartment fire where all contents reach their
ignition temperature and simultaneously ignite is called - ✔✔flashover
✔✔Heat can travel throughout a burning building by one or more of three methods
commonly referred to as - ✔✔conduction, radiation, and convection
✔✔When the oxygen concentration is below __________ percent, flaming combustion
will not usually be supported - ✔✔14-16
✔✔Which is the correct order or explosion from slowest to fastest - ✔✔Combustion,
deflagration, detonation
✔✔The oxidation reaction that results in a very rapid oxidation with the evolution of heat
and light as well as the generation of a very low intensity pressure wave of moving
gases is - ✔✔deflagration
✔✔Two major types of explosions are - ✔✔mechanical and chemical
✔✔The oxidation reaction that results in the extremely rapid, almost instantaneous
oxidation of considerable heat accompanied by a very violent disruptive effect, and at
supersonic speed is - ✔✔detonation
✔✔The gable roof is described as - ✔✔pitched down in two directions from a high point
✔✔The butterfly roof is described as - ✔✔two shed roofs that meet at their low points
✔✔The shed roof is described as - ✔✔roof that slopes in only one direction
✔✔An arched roof is described as a - ✔✔curve shaped roof
✔✔Type I construction is - ✔✔structural members are noncombustible and have a fire
resistance rating
✔✔Which is considered an information source for town/municipal government? -
✔✔Town/City Clerk
ANSWERS RATED A+
✔✔An investigator who is worried whether evidence will disintegrate or break is
concerned about its - ✔✔fraility
✔✔Whenever possible, the evidence storage area should be controlled by the - ✔✔fire
investigator
✔✔Most contamination of physical evidence occurs during - ✔✔collection
✔✔The __________ makes the decision on what physical evidence is to be collected -
✔✔fire investigator
✔✔What is the recommended storage method for paper documents - ✔✔manila
envelope; do not fold; wrap securely
✔✔Which is considered an information source for private organizations -
✔✔International Association of Arson Investigators
✔✔While correlating data and evaluating source information, a credible source that
should be considered is - ✔✔public records maintained by the fire department
✔✔With respect to public records, you would obtain what type of information from the
municipal assessor - ✔✔Taxable value of real property
✔✔With respect to public records, you would expect to obtain what type of information
from the County coroner/medical examiner - ✔✔death certificate
✔✔Safety equipment and clothing should be worn by the investigator on the fire scene -
✔✔at all times
✔✔An investigator planning to enter a fire scene prior to complete extinguishment
should first - ✔✔obtain permission from the incident commander
✔✔A method to identify hazardous materials is - ✔✔noting placards and labels
✔✔Prior to starting the investigation, the investigator needs to ensure - ✔✔structural
stability
✔✔The investigator must be aware of standing pools of water on the scene as they may
contain - ✔✔debris that can cause tripping and falling
, ✔✔Solid or liquid aerosols, carbon monoxide, carbon dioxide, oxygen, nitrogen, and
finely divided carbon particles are all incomplete combustion products referred to as -
✔✔smoke
✔✔Diesel engines use the principle of _________ to ignite fuel vapor - ✔✔heat of
compression
✔✔The transition phase during a compartment fire where all contents reach their
ignition temperature and simultaneously ignite is called - ✔✔flashover
✔✔Heat can travel throughout a burning building by one or more of three methods
commonly referred to as - ✔✔conduction, radiation, and convection
✔✔When the oxygen concentration is below __________ percent, flaming combustion
will not usually be supported - ✔✔14-16
✔✔Which is the correct order or explosion from slowest to fastest - ✔✔Combustion,
deflagration, detonation
✔✔The oxidation reaction that results in a very rapid oxidation with the evolution of heat
and light as well as the generation of a very low intensity pressure wave of moving
gases is - ✔✔deflagration
✔✔Two major types of explosions are - ✔✔mechanical and chemical
✔✔The oxidation reaction that results in the extremely rapid, almost instantaneous
oxidation of considerable heat accompanied by a very violent disruptive effect, and at
supersonic speed is - ✔✔detonation
✔✔The gable roof is described as - ✔✔pitched down in two directions from a high point
✔✔The butterfly roof is described as - ✔✔two shed roofs that meet at their low points
✔✔The shed roof is described as - ✔✔roof that slopes in only one direction
✔✔An arched roof is described as a - ✔✔curve shaped roof
✔✔Type I construction is - ✔✔structural members are noncombustible and have a fire
resistance rating
✔✔Which is considered an information source for town/municipal government? -
✔✔Town/City Clerk
