IAAI CFI & NFPA 921 Exam Questions With Answers | Latest Updated 2024/2025 | Scored A+

"Rule of Nines" correct answers Medical concept, where major body areas are represented by increments of 9% *For example the head equals 9% 109F correct answers In hyperthermia, what core body temperature is generally fatal within minutes unless treated? 4.0 to 10 w.c. correct answers The typical water column range for gas service lines 4th Amendment correct answers The amendment concerning search and seizure *Remember "knocking" 5th Amendment correct answers The amendment concerning pleading, grand jury and double jeopardy *Remember "hand over mouth" 6th Amendment correct answers The amendment concerning speedy trial, impartial, right to counsel, and face witness *Remember "point to wrist watch" Absolute correct answers The temperature scale based on the lowest possible temperature of absolute zero Acute correct answers A type of toxicity exposure that involves a one time exposure at a high level Advancing correct answers The burned section of a wildfire that an investigator should enter first in order to begin examining the wildfire Aerial Layer correct answers The layer in wildfire investigations, which begins at six feet above and up and includes branches, tree moss, and leaves Ambient Wind correct answers The factor or force that can potentially overcome the fire's tendency to burn uphill, and in turn force the fire to burn downhill Ampacity correct answers Conductor capacity Ampere correct answers Unit of electrical current IAAI CFI & NFPA 921 Exam Questions With Answers | Latest Updated 2024/2025 | Scored A+ Arc correct answers Luminous electrical discharge across a gap Arc Mapping correct answers An electrical analysis that is fundamentally pattern recognition Arcing correct answers An electrical event that is typically too brief and localized to be a competent ignition source Arson correct answers From the standpoint of investigative preparation, documentation, and scene control etc., every fire should be approached as if it is potentially what type of fire? Arson Motives correct answers Vandalism, excitement, revenge, crime concealment, profit, extremism, and pyromania are seven types of what? ASTM E1618 correct answers What standard governs evidence collection for accelerant testing? Auto-ignition Temperature correct answers The minimum temperature at which combustible substance ignites without spark or flame Axisymmetric Plume correct answers A fire plume in the center of the room with no wall interface Backdraft correct answers A low-order explosion that is the result of an oxygen-depleted fire that produces high concentrations of incomplete combustion products, with a sudden mixture of air into the accumulated fuels Battery correct answers The only source of electricity in a vehicle when the engine is not running Blast Pressure Front correct answers The expanding leading edge of explosion reaction, which is primarily responsible for explosion damage and injuries BLEVE correct answers The most frequently encountered mechanical explosion BLEVE correct answers An event that occurs when a vessel's contents are liquid and heating causes the liquid to exceed its boiling point and failure of the vessel occurs Rapid Boiling correct answers This is the mechanism in a Mechanical Explosion, along with the expansion of pressurized gas Bow correct answers The front of a boat Breaker Panel correct answers In an electrical system, this device primarily functions as a main cutoff, electrical protection, and power distribution Buoyant Force correct answers A force that is generated by temperature differences *Due to hot air rising because its less dense Buoyant Force correct answers Fire plumes, ceiling jets and vent flows are examples of what type of force at work during a fire? Cable Staple correct answers This structural component cannot be driven through insulation when properly installed 252 Calories & 1055 Joules correct answers One BTU is equal to ________ calories *Which is equal to _________ Joules Carbon Dioxide correct answers A type of suppression agent that is effective because it is noncorrosive, residue-less, non-conductive, and universally useful on most combustibles Carbon Monoxide correct answers Binds with hemoglobin in the blood approximately 250 times greater than oxygen Cascading correct answers Another name for a secondary or subsequent explosion Catalytic Convertor and Turbocharger correct answers Name the other two hottest components in a vehicle, other than the exhaust system. Changed or Transferred correct answers One law of energy says that energy can not be created or destroyed; but can only be what? Chemical Explosion correct answers Flammable gases, vapors of ignitable liquids, combustible dusts, backdraft explosion, and aerosols are examples of fuels often involved in what type of explosion? Chronic correct answers A type of toxicity exposure that involves a low-level of continuous exposure Closed correct answers The type of electrical system that involves a current flowing in a loop or complete circuit. Combustibles correct answers These materials produce essentially the same flame temperature as ignitable liquids. Combustion correct answers A rapid oxidation process, as opposed to slow oxidation Commercial Propane correct answers A type of gas that is liquefied under pressure for storage and is heavier than air (1.5 to 2.0 vapor density) Condensed-Phase Explosive correct answers A solid explosive that is characterized by high pressures, crushing effects, and typically pronounced seats Condensed-Phase Explosion correct answers Explosions involving a solid--as opposed to a diffuse fuel--in which the fuel and oxidizer is mechanically mixed or the material itself can be rapidly and molecularly converted Conductors correct answers These provide a pathway for current to flow in an electrical system Congestion and Confinement correct answers These two conditions are essential for an outdoor vapor cloud explosion to occur, otherwise the ignition of the flammable cloud would merely produce a flash fire Connection Points correct answers The typical location on a circuit where electrical overheating is most likely to occur (eg. loose connection or resistive oxide at the connection) Contamination correct answers Inhalation, cutaneous, ingestion, injection and ocular are the five routes of what? Convertor correct answers A device in an RV that transforms AC to DC Cumulative correct answers A type of toxicity exposure that involves repeated exposure over time Cupping correct answers A fire pattern in a wildfire, where the grass or foliage is beveled on the side facing the fire Curiosity correct answers The most common reason for children playing with fire Daubert Challenge correct answers A legal challenge to the reliability of expert's opinions, utilized to discover the method's testability, peer-reviewed, error rate, and community acceptance Dead Load correct answers The weight of the building's materials Deck correct answers A permanent covering over a boat's compartment/ hull Deflagration correct answers A type of blastwave that is subsonic and does not produce a shockwave Deflagration and Detonation correct answers The two main classes of combustion explosions Deposition correct answers A legal procedure that is part of discovery and seeks to obtain and preserve a testimony Detonation correct answers A type of oxidation reaction and chemical explosion that produces a shockwave Detonation correct answers A type of blastwave that is supersonic and produces a shockwave Diaphragm correct answers The most common pressure regulator in a fuel gas system Diffuse Fuel correct answers Suspended fuel that is capable of being ignited and propagating a flame front *such as gas, dust, aerosol, mist, and particulate Diffuse-Phase Explosion correct answers A rapid combustion of a gas, vapor, mist or dust--that is premixed with air--leading to an explosion Diffusion correct answers When the fuel and air mix at the region of combustion (eg. candle) Diffusion Burning correct answers The ordinary sustained burning mode in most fires Discovery correct answers This legal procedure involving these three forms: a written request to produce, interrogatories, and depositions Drying Oil or Linseed Oil correct answers The most common consumer product that can selfheat and spontaneously ignite Duration correct answers The primary distinction between a spark and an arc Ejecta correct answers The material thrown out of crater during a seated explosion Empirical Scale correct answers A temperature scale based on the freezing and boiling of water (eg. Fahrenheit and Celsius) Electrical Ignition correct answers (1) An electrical component being energized and (2) sufficient heat igniting nearby combustibles are the two primary conditions for what type of ignition to occur? Energy correct answers A property of matter manifested in the ability to perform work, such as movement or heat Created or Destroyed correct answers One law of energy says that energy cannot be what? Engine correct answers The fire origin location which often results in damage to the bottom of the windshield on the passenger side Expert Witness correct answers A type of witness testimony that must show reliable facts, methods, and application of methods Explosion correct answers An event that results in blast pressure injuries, shrapnel injuries, thermal injuries, and building collapse Explosion correct answers A gas dynamic phenomenon, with gas released under pressure Explosion Effects correct answers Blast pressure, dynamic drag loads, shrapnel, thermal, and seismic are five types of what? Explosives correct answers Any chemical compound, mixture, or device in which the primary purpose is to function by explosion Extension Cord correct answers The common household product where an overload is most likely to occur Failure Analysis correct answers Timelines, systems analysis, fault trees, mathematical modeling, and fire testing are examples of WHAT type of tool? Failure Mode and Effects Analysis (FMEA) correct answers A systematic evaluation of all of the equipment or actions that could have lead to an incident Faster correct answers In materials with lower thermal inertia, the temperature will rise slower or faster? Fault Tree correct answers A logic diagram used to analyze fires and explosions Fire Alarm Control Unit correct answers One of the most important components of a fire alarm system, which is the central operating unit Fire Chemistry correct answers The study of the chemical processes in fire *such as state change, decomposition and combustion Fire Dynamics correct answers The principles of this discipline are the same in a vehicle as in a structure Fire Dynamics correct answers The study of how chemistry, fire science, heat transfer, and fluid mechanics interact and influence fire behavior