IAAI CFI
IAAI-CFI (Certified Fire
Investigator) Exam Study Guide –
Practice Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update
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? - Answer✔✔-12.5
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 - Answer✔✔-1000
The year of the first edition of NFPA 1033 - Answer✔✔-1987
A liquid with a flash point ABOVE 100F - Answer✔✔-Combustible Liquid
,IAAI CFI
The recommended distance for securing the perimeter of a blast scene
*That is, the distance from the furthest debris - Answer✔✔-1.5 times
What temperature in the upper gas layer causes the onset of Flashover? -
Answer✔✔-1100°F
The temperature at which copper melts - Answer✔✔-1960°F
The measurement of the radiant heat flux (from gas layer to the floor) that
indicates the onset of flashover - Answer✔✔-2 W/cm2
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) - Answer✔✔-240 volts
The revision cycle for NFPA 921 (timespan) - Answer✔✔-3 years
The flash point of power steering fluid - Answer✔✔-350°F
In high-pressure fuel-injected vehicles, this is the typical range of pressure that
is used to pump fuel from a fuel tank - Answer✔✔-35-70 p.s.i.
The lower explosive and upper explosive limit of natural gas (methane)? -
Answer✔✔-5 and 17
,IAAI CFI
The ignition temperature of power steering fluid - Answer✔✔-680°F
Any substance that can undergo combustion - Answer✔✔-Fuel
Two factors or situations leading to a fire that may show the nature of the
incident responsibility. - Answer✔✔-Act or Omission
This concept should not be included in a summary report of findings. -
Answer✔✔-Additional Investigative Recommendations
A law that may govern the fire investigation of a boat - Answer✔✔-Admiralty
Law
A type of device in a vehicle, which can cause an electrical overload to factory
installed wiring - Answer✔✔-After-market Equipment
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? - Answer✔✔-Alive and Breathing
Those who have the responsibility for monitoring safety conditions at the fire
or explosion scene - Answer✔✔-All Team Members
The melting temperature of aluminum - Answer✔✔-1220°F
Which one of these is NOT considered a competent ignition source?
, IAAI CFI
Metal-to-metal sparks,
Aluminum-to-pavement sparks,
Metal-to-pavement sparks,
Motor bearing sparks - Answer✔✔-Aluminum-to-pavement sparks
A meaningful analysis of a fire requires an understanding of the fire growth, the
total heat released, and WHAT? - Answer✔✔-Heat Release Rate
What does he term AFCI stand for? And, the "A" specifically represents what? -
Answer✔✔-Arc-fault circuit interrupter
The organization that develops standard methods for testing materials -
Answer✔✔-ASTM
Initiation of combustion by heat but without a spark or flame - Answer✔✔-
Auto-ignition
A deflagration resulting from the sudden introduction of air into a confined
space containing oxygen-deficient products of incomplete combustion -
Answer✔✔-Backdraft
An explosion caused by a combination of combustible materials heated to the
ignition point and a sudden introduction of oxygen to support combustion -
Answer✔✔-Backdraft
A boat device that owners fail to keep clean, which is a frequent cause of
engine compartment fires on boats - Answer✔✔-Backfire Flame Arrestor
IAAI-CFI (Certified Fire
Investigator) Exam Study Guide –
Practice Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update
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? - Answer✔✔-12.5
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 - Answer✔✔-1000
The year of the first edition of NFPA 1033 - Answer✔✔-1987
A liquid with a flash point ABOVE 100F - Answer✔✔-Combustible Liquid
,IAAI CFI
The recommended distance for securing the perimeter of a blast scene
*That is, the distance from the furthest debris - Answer✔✔-1.5 times
What temperature in the upper gas layer causes the onset of Flashover? -
Answer✔✔-1100°F
The temperature at which copper melts - Answer✔✔-1960°F
The measurement of the radiant heat flux (from gas layer to the floor) that
indicates the onset of flashover - Answer✔✔-2 W/cm2
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) - Answer✔✔-240 volts
The revision cycle for NFPA 921 (timespan) - Answer✔✔-3 years
The flash point of power steering fluid - Answer✔✔-350°F
In high-pressure fuel-injected vehicles, this is the typical range of pressure that
is used to pump fuel from a fuel tank - Answer✔✔-35-70 p.s.i.
The lower explosive and upper explosive limit of natural gas (methane)? -
Answer✔✔-5 and 17
,IAAI CFI
The ignition temperature of power steering fluid - Answer✔✔-680°F
Any substance that can undergo combustion - Answer✔✔-Fuel
Two factors or situations leading to a fire that may show the nature of the
incident responsibility. - Answer✔✔-Act or Omission
This concept should not be included in a summary report of findings. -
Answer✔✔-Additional Investigative Recommendations
A law that may govern the fire investigation of a boat - Answer✔✔-Admiralty
Law
A type of device in a vehicle, which can cause an electrical overload to factory
installed wiring - Answer✔✔-After-market Equipment
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? - Answer✔✔-Alive and Breathing
Those who have the responsibility for monitoring safety conditions at the fire
or explosion scene - Answer✔✔-All Team Members
The melting temperature of aluminum - Answer✔✔-1220°F
Which one of these is NOT considered a competent ignition source?
, IAAI CFI
Metal-to-metal sparks,
Aluminum-to-pavement sparks,
Metal-to-pavement sparks,
Motor bearing sparks - Answer✔✔-Aluminum-to-pavement sparks
A meaningful analysis of a fire requires an understanding of the fire growth, the
total heat released, and WHAT? - Answer✔✔-Heat Release Rate
What does he term AFCI stand for? And, the "A" specifically represents what? -
Answer✔✔-Arc-fault circuit interrupter
The organization that develops standard methods for testing materials -
Answer✔✔-ASTM
Initiation of combustion by heat but without a spark or flame - Answer✔✔-
Auto-ignition
A deflagration resulting from the sudden introduction of air into a confined
space containing oxygen-deficient products of incomplete combustion -
Answer✔✔-Backdraft
An explosion caused by a combination of combustible materials heated to the
ignition point and a sudden introduction of oxygen to support combustion -
Answer✔✔-Backdraft
A boat device that owners fail to keep clean, which is a frequent cause of
engine compartment fires on boats - Answer✔✔-Backfire Flame Arrestor
