NAFI FINAL PAPER 2025/2026 QUESTIONS WITH
ANSWERS RATED A+
✔✔Rapid-fire growth and extensive damage are proof of an incendiary fire.
a. True
b. False - ✔✔b. False
✔✔The external temperatures of catalytic converters in automobiles can reach
temperatures high enough to ignite ordinary combustibles under normal operating
conditions and can become higher when ventilation and air circulation are restricted.
a. True
b. False - ✔✔a. True
✔✔The vehicle identification number of a vehicle may be found on the
________________.
a. dash of the vehicle
b. Federal Theft Prevention Standard label
c. Federal Emissions Certification label
d. all of the above - ✔✔a. dash of the vehicle
✔✔Documentation of the vehicle fire incident can be accomplished through
____________________.
a. photographs
b. written notes
c. diagrams
d. all of the above - ✔✔d all of the above
✔✔_______________ are common sources of ignition for fires in vehicles.
a. Electrical arcs
b. Hot surfaces
c. Open flames
d. All of the above - ✔✔d. All of the above
✔✔The area of greatest destruction is always the area of origin.
a. True
b. False - ✔✔b. False
✔✔Which of the following can affect the flash point of lubricating oils?
, a. contamination of the lubricating oil
b. the age (length of service) of the oil
c. the chemical composition
d. all of the above - ✔✔d. all of the above
✔✔Evidence of a mechanical failure in an engine or transmission is proof of a motive for
vehicle arson.
a. True
b. False - ✔✔b. False
✔✔A dragging or improperly adjusted brake can overheat to the point a fire can occur.
a. True
b. False - ✔✔a. True
✔✔Many modern vehicles use plastic materials in the engine compartments, increasing
the fuel load.
a. True
b. False - ✔✔a. True
✔✔Corrosion of electrical wiring and components can present a fire hazard.
a. True
b. False - ✔✔a. True
✔✔The positions of the power door locks in a vehicle that has been involved in a fire
can be reliably used to determine its pre-fire positions.
a. True
b. False - ✔✔b. False
✔✔The surface temperature of engine components increase during the heat (hot) soak
period, rendering it a more competent ignition source for fugitive engine fluids.
a. True
b. False - ✔✔a. True
✔✔Electrical arcs may normally occur in which component?
a. Relays
b. Electrical motors
ANSWERS RATED A+
✔✔Rapid-fire growth and extensive damage are proof of an incendiary fire.
a. True
b. False - ✔✔b. False
✔✔The external temperatures of catalytic converters in automobiles can reach
temperatures high enough to ignite ordinary combustibles under normal operating
conditions and can become higher when ventilation and air circulation are restricted.
a. True
b. False - ✔✔a. True
✔✔The vehicle identification number of a vehicle may be found on the
________________.
a. dash of the vehicle
b. Federal Theft Prevention Standard label
c. Federal Emissions Certification label
d. all of the above - ✔✔a. dash of the vehicle
✔✔Documentation of the vehicle fire incident can be accomplished through
____________________.
a. photographs
b. written notes
c. diagrams
d. all of the above - ✔✔d all of the above
✔✔_______________ are common sources of ignition for fires in vehicles.
a. Electrical arcs
b. Hot surfaces
c. Open flames
d. All of the above - ✔✔d. All of the above
✔✔The area of greatest destruction is always the area of origin.
a. True
b. False - ✔✔b. False
✔✔Which of the following can affect the flash point of lubricating oils?
, a. contamination of the lubricating oil
b. the age (length of service) of the oil
c. the chemical composition
d. all of the above - ✔✔d. all of the above
✔✔Evidence of a mechanical failure in an engine or transmission is proof of a motive for
vehicle arson.
a. True
b. False - ✔✔b. False
✔✔A dragging or improperly adjusted brake can overheat to the point a fire can occur.
a. True
b. False - ✔✔a. True
✔✔Many modern vehicles use plastic materials in the engine compartments, increasing
the fuel load.
a. True
b. False - ✔✔a. True
✔✔Corrosion of electrical wiring and components can present a fire hazard.
a. True
b. False - ✔✔a. True
✔✔The positions of the power door locks in a vehicle that has been involved in a fire
can be reliably used to determine its pre-fire positions.
a. True
b. False - ✔✔b. False
✔✔The surface temperature of engine components increase during the heat (hot) soak
period, rendering it a more competent ignition source for fugitive engine fluids.
a. True
b. False - ✔✔a. True
✔✔Electrical arcs may normally occur in which component?
a. Relays
b. Electrical motors
