IAAI CFI LATEST 2026 EXAM TEST PAPER QUESTIONS AND
SOLUTIONS RATED A+
✔✔Interested Party - ✔✔Any person, entity, or organization with obligations or whose
rights or interest might be affected by the investigation of a specific incident
✔✔Interviews - ✔✔(1) Trust, (2) Caution, and (3) Distrust are three types of what?
✔✔Inverted Cone Pattern - ✔✔This fire pattern is often caused by a natural gas leak
✔✔Inverted Cone Patterns - ✔✔Fire patterns commonly created when a vertical flame
plume does not reach the ceiling
✔✔Team Leader Committee - ✔✔In what group is one representative selected from
each investigative party?
✔✔Irregular Pattern - ✔✔A certain pattern that is not necessarily an indicator of the
presence of an ignitable liquid
✔✔Job Performance Requirement - ✔✔A professional description that (1) describes the
specific job task, (2) lists items necessary to complete the task, and (3) describes
measurable outcomes and evaluations for the task
✔✔Joint Investigations - ✔✔These can occur simultaneously and involve separate and
independent examinations through which each party may develop an independent
hypothesis
✔✔Kerosene - ✔✔Which of these fuels has the lowest ignition temperature: kerosene,
gasoline, methane, or propane?
✔✔Kinetic Energy - ✔✔The type of energy that is converted suddenly from potential
energy during an explosion, with the production and release of gases under pressure.
✔✔Laboratory Analysis - ✔✔This entity must confirm any sample obtained by canine
alert, to be considered valid
✔✔Lack of Stability - ✔✔One of the most dangerous situations an investigator may
encounter when examining a boat afloat after a fire
✔✔Laminated Wood - ✔✔This material is NOT acceptable to be used on the exterior
(but is acceptable for the interior).
✔✔Latent Heat of Vaporization - ✔✔The amount of heat absorbed by a substance
during its change from a liquid to vapor
,✔✔Lightning - ✔✔Static electricity flowing from cloud to ground or from cloud to cloud
✔✔Lightning - ✔✔One form of static electricity
✔✔Cloud-to-Cloud - ✔✔The lightning occurrence that is less likely to cause a fire
(compared to cloud-to-ground)
✔✔Lines of Demarcation - ✔✔Borders of fire patterns
✔✔Low-Order Damage - ✔✔Type of explosion damage that heaves or pushes
✔✔Melt and Fuse Together Lengthwise - ✔✔Fire often causes standard copper
conductors to do WHAT?
✔✔Movement and Intensity - ✔✔The two basic types of fire patterns
✔✔Neutral Plane - ✔✔The term associated with the air and gas flow in a compartment
fire
✔✔Neutral Position - ✔✔The position on a receptacle, where the cord's wider prong is
forced to plug into, due to a change that was made to 20-amp cords in 1987
✔✔NFPA 1033 - ✔✔The national applicable performance standards for fire
investigators
✔✔NFPA 54 - ✔✔NFPA standard that prohibits gas piping in air ducts, clothes chutes,
and elevator shafts
✔✔NFPA 704 - ✔✔The NFPA standard for hazard identification
✔✔NFPA 704 - ✔✔NFPA hazard placard:
red TOP (flammability)
yellow RIGHT (instability)
blue LEFT (health)
white BOTTOM (special/specific)
*(0 minimal to 4 severe hazard)
✔✔NFPA 921 - ✔✔Not every portion of WHAT document is essential to every fire or
explosion incident
✔✔NFPA website - ✔✔To submit a proposal to the NFPA 921 Committee, forms are
available from the _____________________.
, ✔✔Noncombustible - ✔✔Type of construction principally used in industrial type
buildings
✔✔Nondisclosure Agreement - ✔✔This protects confidential, trade secret, and propriety
information in a fire investigation
✔✔Occupant Access - ✔✔During a major investigation involving multiple tenants, this
should NOT be allowed until after the entire area has been examined and safety
concerns have been addressed
✔✔Exterior Walls - ✔✔The primary difference between Ordinary and Frame
constructions involves mostly the construction of WHAT?
✔✔Outside Screw and Yoke - ✔✔One type of valve commonly used to control water
flow to fire sprinkler system
*which is open when the position of the stem is up
✔✔Overcurrent - ✔✔The electrical compromise between an energized wire and a
ground wire
✔✔Overhaul - ✔✔The process of extinguishing hotspots and searching for hidden fires,
after suppression efforts
✔✔Oxidation - ✔✔A chemical reaction that combines a substance with oxygen
✔✔Oxidation - ✔✔The basic chemical process associated with combustion
✔✔Oxide Interface - ✔✔This occurs when there is a poor electrical connection
✔✔Paper - ✔✔A material that is NOT commonly subject to self-heating
✔✔Photography - ✔✔While the scene is being "dug out" or excavated, this technique is
used throughout the investigation process to document the sequence of events.
✔✔Physical Evidence of the Cause - ✔✔When the origin is clearly defined, it is possible
to make a credible determination regarding the cause of the fire, even without the
availability of WHAT?
✔✔Polyurethane Sofa - ✔✔A fuel item that has the greatest peak heat release rate (in
unconfined burning).
SOLUTIONS RATED A+
✔✔Interested Party - ✔✔Any person, entity, or organization with obligations or whose
rights or interest might be affected by the investigation of a specific incident
✔✔Interviews - ✔✔(1) Trust, (2) Caution, and (3) Distrust are three types of what?
✔✔Inverted Cone Pattern - ✔✔This fire pattern is often caused by a natural gas leak
✔✔Inverted Cone Patterns - ✔✔Fire patterns commonly created when a vertical flame
plume does not reach the ceiling
✔✔Team Leader Committee - ✔✔In what group is one representative selected from
each investigative party?
✔✔Irregular Pattern - ✔✔A certain pattern that is not necessarily an indicator of the
presence of an ignitable liquid
✔✔Job Performance Requirement - ✔✔A professional description that (1) describes the
specific job task, (2) lists items necessary to complete the task, and (3) describes
measurable outcomes and evaluations for the task
✔✔Joint Investigations - ✔✔These can occur simultaneously and involve separate and
independent examinations through which each party may develop an independent
hypothesis
✔✔Kerosene - ✔✔Which of these fuels has the lowest ignition temperature: kerosene,
gasoline, methane, or propane?
✔✔Kinetic Energy - ✔✔The type of energy that is converted suddenly from potential
energy during an explosion, with the production and release of gases under pressure.
✔✔Laboratory Analysis - ✔✔This entity must confirm any sample obtained by canine
alert, to be considered valid
✔✔Lack of Stability - ✔✔One of the most dangerous situations an investigator may
encounter when examining a boat afloat after a fire
✔✔Laminated Wood - ✔✔This material is NOT acceptable to be used on the exterior
(but is acceptable for the interior).
✔✔Latent Heat of Vaporization - ✔✔The amount of heat absorbed by a substance
during its change from a liquid to vapor
,✔✔Lightning - ✔✔Static electricity flowing from cloud to ground or from cloud to cloud
✔✔Lightning - ✔✔One form of static electricity
✔✔Cloud-to-Cloud - ✔✔The lightning occurrence that is less likely to cause a fire
(compared to cloud-to-ground)
✔✔Lines of Demarcation - ✔✔Borders of fire patterns
✔✔Low-Order Damage - ✔✔Type of explosion damage that heaves or pushes
✔✔Melt and Fuse Together Lengthwise - ✔✔Fire often causes standard copper
conductors to do WHAT?
✔✔Movement and Intensity - ✔✔The two basic types of fire patterns
✔✔Neutral Plane - ✔✔The term associated with the air and gas flow in a compartment
fire
✔✔Neutral Position - ✔✔The position on a receptacle, where the cord's wider prong is
forced to plug into, due to a change that was made to 20-amp cords in 1987
✔✔NFPA 1033 - ✔✔The national applicable performance standards for fire
investigators
✔✔NFPA 54 - ✔✔NFPA standard that prohibits gas piping in air ducts, clothes chutes,
and elevator shafts
✔✔NFPA 704 - ✔✔The NFPA standard for hazard identification
✔✔NFPA 704 - ✔✔NFPA hazard placard:
red TOP (flammability)
yellow RIGHT (instability)
blue LEFT (health)
white BOTTOM (special/specific)
*(0 minimal to 4 severe hazard)
✔✔NFPA 921 - ✔✔Not every portion of WHAT document is essential to every fire or
explosion incident
✔✔NFPA website - ✔✔To submit a proposal to the NFPA 921 Committee, forms are
available from the _____________________.
, ✔✔Noncombustible - ✔✔Type of construction principally used in industrial type
buildings
✔✔Nondisclosure Agreement - ✔✔This protects confidential, trade secret, and propriety
information in a fire investigation
✔✔Occupant Access - ✔✔During a major investigation involving multiple tenants, this
should NOT be allowed until after the entire area has been examined and safety
concerns have been addressed
✔✔Exterior Walls - ✔✔The primary difference between Ordinary and Frame
constructions involves mostly the construction of WHAT?
✔✔Outside Screw and Yoke - ✔✔One type of valve commonly used to control water
flow to fire sprinkler system
*which is open when the position of the stem is up
✔✔Overcurrent - ✔✔The electrical compromise between an energized wire and a
ground wire
✔✔Overhaul - ✔✔The process of extinguishing hotspots and searching for hidden fires,
after suppression efforts
✔✔Oxidation - ✔✔A chemical reaction that combines a substance with oxygen
✔✔Oxidation - ✔✔The basic chemical process associated with combustion
✔✔Oxide Interface - ✔✔This occurs when there is a poor electrical connection
✔✔Paper - ✔✔A material that is NOT commonly subject to self-heating
✔✔Photography - ✔✔While the scene is being "dug out" or excavated, this technique is
used throughout the investigation process to document the sequence of events.
✔✔Physical Evidence of the Cause - ✔✔When the origin is clearly defined, it is possible
to make a credible determination regarding the cause of the fire, even without the
availability of WHAT?
✔✔Polyurethane Sofa - ✔✔A fuel item that has the greatest peak heat release rate (in
unconfined burning).
