IAAI CFI" ExAm 2026: ComplEtE QuEstIons wIth
ACCurAtE AnswErs & ExplAnAtIons | GuArAntEEd
pAss | lAtEst VErsIon
1. Overloads - ANSWER This design allows handling of short-term overloads
and high-fault currents differently.
2. Fire scene - ANSWER The fire scene itself should be regarded as evidence.
3. Wildfire investigations - ANSWER In wildfire investigations, evidence
collection and documentation are equally important as in structural fires.
4. Entry to property - ANSWER Entry to a property to extinguish a fire is
usually justified by exigent circumstances.
5. Fire origin determination - ANSWER Typically relies on witness info, fire
patterns, arc mapping, and fire dynamics.
6. Thermal injuries from explosions - ANSWER Typically result in 1st- or 2nd-
degree burns due to the brief nature of the flame front.
7. Flame spread rating system - ANSWER Classifies building materials (A, B,
C) based on the flame spread index.
8. Flammable gas ignition - ANSWER Can only ignite over specific ranges of
gas concentration in air.
,9. Flammable liquid definition - ANSWER Defined as one with a flash point
below 100°F.
10.Ignite - ANSWER Given an ignition source
11.Flash point when released as a spray - ANSWER Becomes irrelevant
12.Flashover in a compartment - ANSWER Characterized by radiant ignition of
all exposed combustibles.
13.Flashover in a low-ceiling room - ANSWER Occurs sooner compared to a
high-ceiling room.
14.Flashover consideration in wildfires - ANSWER Not typically a
consideration due to lack of compartment boundaries.
15.Floor assemblies testing - ANSWER Never tested from above.
16.Two modes of convection heat transfer - ANSWER Forced and natural.
17.Freedom of Information Act (FOIA) - ANSWER Allows investigators to
gain certain public records.
18.First cutting unit on a combine - ANSWER Often called the header.
,19.Heat flux formula - ANSWER Heat flux = energy flow per unit area (W/cm²
or kW/m²).
20.Fire characteristic affecting growth in pre-flashover phase - ANSWER Heat
release rate.
21.Convection - ANSWER A mode of heat transfer that involves the movement
of fluids.
22.Radiation - ANSWER A mode of heat transfer that involves the emission of
energy as electromagnetic waves.
23.High-order explosion - ANSWER An explosion that produces a supersonic
shock wave causing fragmentation, typically resulting in shattering with
small debris.
24.HIN (Hull Identification Number) - ANSWER A unique identifier for boats
used for registration and identification, often looked for in boat fire
investigations.
25.Gasoline autoignition temperature - ANSWER The temperature at which
gasoline will ignite without an external flame, which is higher than typical
engine surface temperatures (~495°F-536°F).
26.Body fat - ANSWER A part of the human body that can act as a fuel in
prolonged burning, sustaining combustion under high heat conditions.
, 27.Ignitable liquid recovery - ANSWER The process of recovering ignitable
liquids trapped in concrete floors using materials like lime or non-self-rising
flour.
28.Incandescent light bulbs over 25 watts - ANSWER Often pull (sag) toward
the heat source.
29.Pull (sag) - ANSWER Toward the heat source
30.Incendiary fire classification - ANSWER A fire classification indicating
multiple points of origin and trailers, strongly suggesting intentional
ignition.
31.Incident scene commander permission - ANSWER The commander may
grant permission for an investigator to enter before final extinguishment.
32.Inductive reasoning in fire investigation - ANSWER Moving from specific
observations to broader generalizations.
33.Types of interviews - ANSWER The three types of interviews are trust,
caution, and distrust.
34.Inverted cone fire pattern - ANSWER Often results when vertical flame
plumes do not reach the ceiling.
35.Inverted cones from a natural gas leak - ANSWER Patterns that are narrower
at the ceiling and wider near the floor, typical of a vertical flame plume that
didn't spread across the ceiling.
ACCurAtE AnswErs & ExplAnAtIons | GuArAntEEd
pAss | lAtEst VErsIon
1. Overloads - ANSWER This design allows handling of short-term overloads
and high-fault currents differently.
2. Fire scene - ANSWER The fire scene itself should be regarded as evidence.
3. Wildfire investigations - ANSWER In wildfire investigations, evidence
collection and documentation are equally important as in structural fires.
4. Entry to property - ANSWER Entry to a property to extinguish a fire is
usually justified by exigent circumstances.
5. Fire origin determination - ANSWER Typically relies on witness info, fire
patterns, arc mapping, and fire dynamics.
6. Thermal injuries from explosions - ANSWER Typically result in 1st- or 2nd-
degree burns due to the brief nature of the flame front.
7. Flame spread rating system - ANSWER Classifies building materials (A, B,
C) based on the flame spread index.
8. Flammable gas ignition - ANSWER Can only ignite over specific ranges of
gas concentration in air.
,9. Flammable liquid definition - ANSWER Defined as one with a flash point
below 100°F.
10.Ignite - ANSWER Given an ignition source
11.Flash point when released as a spray - ANSWER Becomes irrelevant
12.Flashover in a compartment - ANSWER Characterized by radiant ignition of
all exposed combustibles.
13.Flashover in a low-ceiling room - ANSWER Occurs sooner compared to a
high-ceiling room.
14.Flashover consideration in wildfires - ANSWER Not typically a
consideration due to lack of compartment boundaries.
15.Floor assemblies testing - ANSWER Never tested from above.
16.Two modes of convection heat transfer - ANSWER Forced and natural.
17.Freedom of Information Act (FOIA) - ANSWER Allows investigators to
gain certain public records.
18.First cutting unit on a combine - ANSWER Often called the header.
,19.Heat flux formula - ANSWER Heat flux = energy flow per unit area (W/cm²
or kW/m²).
20.Fire characteristic affecting growth in pre-flashover phase - ANSWER Heat
release rate.
21.Convection - ANSWER A mode of heat transfer that involves the movement
of fluids.
22.Radiation - ANSWER A mode of heat transfer that involves the emission of
energy as electromagnetic waves.
23.High-order explosion - ANSWER An explosion that produces a supersonic
shock wave causing fragmentation, typically resulting in shattering with
small debris.
24.HIN (Hull Identification Number) - ANSWER A unique identifier for boats
used for registration and identification, often looked for in boat fire
investigations.
25.Gasoline autoignition temperature - ANSWER The temperature at which
gasoline will ignite without an external flame, which is higher than typical
engine surface temperatures (~495°F-536°F).
26.Body fat - ANSWER A part of the human body that can act as a fuel in
prolonged burning, sustaining combustion under high heat conditions.
, 27.Ignitable liquid recovery - ANSWER The process of recovering ignitable
liquids trapped in concrete floors using materials like lime or non-self-rising
flour.
28.Incandescent light bulbs over 25 watts - ANSWER Often pull (sag) toward
the heat source.
29.Pull (sag) - ANSWER Toward the heat source
30.Incendiary fire classification - ANSWER A fire classification indicating
multiple points of origin and trailers, strongly suggesting intentional
ignition.
31.Incident scene commander permission - ANSWER The commander may
grant permission for an investigator to enter before final extinguishment.
32.Inductive reasoning in fire investigation - ANSWER Moving from specific
observations to broader generalizations.
33.Types of interviews - ANSWER The three types of interviews are trust,
caution, and distrust.
34.Inverted cone fire pattern - ANSWER Often results when vertical flame
plumes do not reach the ceiling.
35.Inverted cones from a natural gas leak - ANSWER Patterns that are narrower
at the ceiling and wider near the floor, typical of a vertical flame plume that
didn't spread across the ceiling.
