IAAI CFI Study Questions and Answers (2025)
Combustible Liquid - -A liquid with a flash point ABOVE 100F
-12.5 - -If the current flowing out from an electrical panel is 12.5 amps, and it then flows
through an electrical load of 1500 watts, what is the amperage of the remaining current
flow of the return circuit?
-1000 - -If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the
wattage?
*Power (P) = current (I) x voltage (V)
Watts = amps x volts
-1987 - -The year of the first edition of NFPA 1033
-1.5 times - -The recommended distance for securing the perimeter of a blast scene
*That is, the distance from the furthest debris
-1100°F - -What temperature in the upper gas layer causes the onset of Flashover?
-1960°F - -The temperature at which copper melts
-2 W/cm2 - -The measurement of the radiant heat flux (from gas layer to the floor) that
indicates the onset of flashover
-240 volts - -The voltage between the two hot wires at the service entrance cables in most
single-family residences in the United States (single-phase service with three wires)
-3 years - -The revision cycle for NFPA 921 (timespan)
-350°F - -The flash point of power steering fluid
-35-70 p.s.i. - -In high-pressure fuel-injected vehicles, this is the typical range of pressure
that is used to pump fuel from a fuel tank
-5 and 17 - -The lower explosive and upper explosive limit of natural gas (methane)?
-680°F - -The ignition temperature of power steering fluid
-Fuel - -Any substance that can undergo combustion
-Act or Omission - -Two factors or situations leading to a fire that may show the nature of
the incident responsibility.
, -Additional Investigative Recommendations - -This concept should not be included in a
summary report of findings.
-Admiralty Law - -A law that may govern the fire investigation of a boat
-After-market Equipment - -A type of device in a vehicle, which can cause an electrical
overload to factory installed wiring
-Alive and Breathing - -Evidence of smoke or soot in the lungs, bronchi, and trachea is one
of the most significant factors in confirming that, at the time of the fire, the victim was
WHAT?
-All Team Members - -Those who have the responsibility for monitoring safety conditions
at the fire or explosion scene
-1220°F - -The melting temperature of aluminum
-Aluminum-to-pavement sparks - -Which one of these is NOT considered a competent
ignition source?
Metal-to-metal sparks,
Aluminum-to-pavement sparks,
Metal-to-pavement sparks,
Motor bearing sparks
-Heat Release Rate - -A meaningful analysis of a fire requires an understanding of the fire
growth, the total heat released, and WHAT?
-Arc-fault circuit interrupter - -What does he term AFCI stand for? And, the "A" specifically
represents what?
-ASTM - -The organization that develops standard methods for testing materials
-Auto-ignition - -Initiation of combustion by heat but without a spark or flame
-Backdraft - -A deflagration resulting from the sudden introduction of air into a confined
space containing oxygen-deficient products of incomplete combustion
-Backdraft - -An explosion caused by a combination of combustible materials heated to the
ignition point and a sudden introduction of oxygen to support combustion
-Backfire Flame Arrestor - -A boat device that owners fail to keep clean, which is a
frequent cause of engine compartment fires on boats
-Ballast - -A device on a fluorescent light fixture that transforms the voltage from normal
household voltage to a higher voltage
, -Battery - -The starter motor draws its energy from this source
-Beyond a Reasonable Doubt - -The burden of proof in a criminal trial
-Bimetallic Thermostats - -The component that controls temperature in many heat-
producing appliances
-BLEVE - -This may occur when the vapor pressure of a liquid exceeds atmospheric
pressure
*And this is the most common mechanical explosion
-Boiling Point - -The temperature or point at which the vapor pressure of a liquid equals
the external pressure applied
-Bonding - -The process of electrically connecting two or more conductive objects
-Bottom Passenger Side of the Windshield - -Most engine fires typically penetrate the
interior compartment at this location of the vehicle
-Brass Prongs (male ends) - -An investigator can closely examine this component of a cord
to determine if it was plugged into a receptacle
-Calcination - -The chemical and physical changes that occur in gypsum wallboard
surfaces during a fire
-Carbon Monoxide - -A narcotic gas that one might be exposed to in the fire
-Carbon Monoxide - -The levels of this toxin dissipate over time after removal from the
fire environment.
-Carbon Monoxide Poisoning - -This toxic condition does NOT cause a cherry-pink
coloration to the skin of the fire victim and is NOT visible on all skin types
-Carburetor Backfire - -This occurrence is the most common open-flame ignition source in
non-fuel injected vehicles
-Ceiling jet - -When the fire plume reaches the ceiling of a room and moves laterally along
the ceiling
-Christmas Tree - -An item in the home that burns at a peak HRR of 3000-5000kW, which
is hotter than a pool of gasoline or a polyurethane chair
-Clean Burn - -This occurs when intense radiated heat or direct flame contacts a surface
during the fire, burning away deposits
Combustible Liquid - -A liquid with a flash point ABOVE 100F
-12.5 - -If the current flowing out from an electrical panel is 12.5 amps, and it then flows
through an electrical load of 1500 watts, what is the amperage of the remaining current
flow of the return circuit?
-1000 - -If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the
wattage?
*Power (P) = current (I) x voltage (V)
Watts = amps x volts
-1987 - -The year of the first edition of NFPA 1033
-1.5 times - -The recommended distance for securing the perimeter of a blast scene
*That is, the distance from the furthest debris
-1100°F - -What temperature in the upper gas layer causes the onset of Flashover?
-1960°F - -The temperature at which copper melts
-2 W/cm2 - -The measurement of the radiant heat flux (from gas layer to the floor) that
indicates the onset of flashover
-240 volts - -The voltage between the two hot wires at the service entrance cables in most
single-family residences in the United States (single-phase service with three wires)
-3 years - -The revision cycle for NFPA 921 (timespan)
-350°F - -The flash point of power steering fluid
-35-70 p.s.i. - -In high-pressure fuel-injected vehicles, this is the typical range of pressure
that is used to pump fuel from a fuel tank
-5 and 17 - -The lower explosive and upper explosive limit of natural gas (methane)?
-680°F - -The ignition temperature of power steering fluid
-Fuel - -Any substance that can undergo combustion
-Act or Omission - -Two factors or situations leading to a fire that may show the nature of
the incident responsibility.
, -Additional Investigative Recommendations - -This concept should not be included in a
summary report of findings.
-Admiralty Law - -A law that may govern the fire investigation of a boat
-After-market Equipment - -A type of device in a vehicle, which can cause an electrical
overload to factory installed wiring
-Alive and Breathing - -Evidence of smoke or soot in the lungs, bronchi, and trachea is one
of the most significant factors in confirming that, at the time of the fire, the victim was
WHAT?
-All Team Members - -Those who have the responsibility for monitoring safety conditions
at the fire or explosion scene
-1220°F - -The melting temperature of aluminum
-Aluminum-to-pavement sparks - -Which one of these is NOT considered a competent
ignition source?
Metal-to-metal sparks,
Aluminum-to-pavement sparks,
Metal-to-pavement sparks,
Motor bearing sparks
-Heat Release Rate - -A meaningful analysis of a fire requires an understanding of the fire
growth, the total heat released, and WHAT?
-Arc-fault circuit interrupter - -What does he term AFCI stand for? And, the "A" specifically
represents what?
-ASTM - -The organization that develops standard methods for testing materials
-Auto-ignition - -Initiation of combustion by heat but without a spark or flame
-Backdraft - -A deflagration resulting from the sudden introduction of air into a confined
space containing oxygen-deficient products of incomplete combustion
-Backdraft - -An explosion caused by a combination of combustible materials heated to the
ignition point and a sudden introduction of oxygen to support combustion
-Backfire Flame Arrestor - -A boat device that owners fail to keep clean, which is a
frequent cause of engine compartment fires on boats
-Ballast - -A device on a fluorescent light fixture that transforms the voltage from normal
household voltage to a higher voltage
, -Battery - -The starter motor draws its energy from this source
-Beyond a Reasonable Doubt - -The burden of proof in a criminal trial
-Bimetallic Thermostats - -The component that controls temperature in many heat-
producing appliances
-BLEVE - -This may occur when the vapor pressure of a liquid exceeds atmospheric
pressure
*And this is the most common mechanical explosion
-Boiling Point - -The temperature or point at which the vapor pressure of a liquid equals
the external pressure applied
-Bonding - -The process of electrically connecting two or more conductive objects
-Bottom Passenger Side of the Windshield - -Most engine fires typically penetrate the
interior compartment at this location of the vehicle
-Brass Prongs (male ends) - -An investigator can closely examine this component of a cord
to determine if it was plugged into a receptacle
-Calcination - -The chemical and physical changes that occur in gypsum wallboard
surfaces during a fire
-Carbon Monoxide - -A narcotic gas that one might be exposed to in the fire
-Carbon Monoxide - -The levels of this toxin dissipate over time after removal from the
fire environment.
-Carbon Monoxide Poisoning - -This toxic condition does NOT cause a cherry-pink
coloration to the skin of the fire victim and is NOT visible on all skin types
-Carburetor Backfire - -This occurrence is the most common open-flame ignition source in
non-fuel injected vehicles
-Ceiling jet - -When the fire plume reaches the ceiling of a room and moves laterally along
the ceiling
-Christmas Tree - -An item in the home that burns at a peak HRR of 3000-5000kW, which
is hotter than a pool of gasoline or a polyurethane chair
-Clean Burn - -This occurs when intense radiated heat or direct flame contacts a surface
during the fire, burning away deposits
