COMPLETE REAL EXAM QUESTIONS AND CORRECT
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SECTION 1: DEFINITIONS & TERMINOLOGY (Questions 1-30)
1. What is the definition of a combustible liquid?
A) A liquid with a flash point below 100°F
B) A liquid with a flash point above 100°F
C) A liquid with a flash point exactly at 100°F
D) A liquid that ignites spontaneously
Answer: B. A combustible liquid is defined as having a flash point ABOVE 100°F,
distinguishing it from flammable liquids which have lower flash points .
2. What is the flash point of a liquid?
A) The temperature at which a liquid ignites
B) The minimum temperature at which a liquid gives off sufficient vapor to form an ignitable
mixture with air
C) The temperature at which a liquid boils
D) The temperature at which a liquid freezes
Answer: B. Flash point is the minimum temperature at which a liquid gives off sufficient
vapor to form an ignitable mixture with air near its surface .
3. What is the definition of "heat release rate" (HRR)?
, A) The temperature of a fire
B) The energy being released by the individual fuels being consumed
C) The speed at which a fire spreads
D) The total heat produced by a fire
Answer: B. Heat release rate is the energy being released by the individual fuels being
consumed, measured in Watts or Kilowatts .
4. What is "flashover"?
A) The ignition of a single fuel package
B) A compartment fire transitioning from growth to fully developed phase where radiant heat
reaches ignition temperature of other combustibles
C) The cooling phase of a fire
D) The initial ignition of a fire
Answer: B. Flashover occurs in a compartment when radiant heat reaches the ignition
temperature of other combustible items within the room, producing fire gases .
5. What is the definition of "calcination"?
A) The melting of glass
B) The chemical and physical changes that occur in gypsum wallboard surfaces during a
fire
C) The oxidation of metals
D) The combustion of wood
Answer: B. Calcination refers to the chemical and physical changes that occur in gypsum
wallboard surfaces during a fire .
6. What is "crazing" in fire investigation?
A) The melting of glass
, B) Complicated patterns in glass caused by rapid cooling or heating
C) The charring of wood
D) The calcination of gypsum
Answer: B. Crazing refers to complicated patterns in glass caused by rapid cooling or
heating .
7. What is the definition of "pyrolysis"?
A) The combustion of materials in the presence of oxygen
B) The thermal decomposition of materials without oxygen
C) The cooling of materials
D) The melting of materials
Answer: B. Pyrolysis is the thermal decomposition of materials in the absence of oxygen,
producing combustible gases .
8. What is "heat flux"?
A) The total heat produced by a fire
B) The measurement of the rate of heat transfer to a surface
C) The temperature of a fire
D) The speed of fire spread
Answer: B. Heat flux is the measurement of the rate of heat transfer to a surface, typically
measured in W/cm² .
9. What is the definition of "thermal inertia"?
A) Heat x density x thermal conductivity
B) The temperature of a material
C) The speed of heat transfer
D) The mass of a material
, Answer: A. Thermal inertia is the product of thermal conductivity, density, and specific heat
capacity (k × ρ × c) and is a key factor in considering a material's reaction to heating and
ease of ignition .
10. What is "exothermic" reaction?
A) A reaction that absorbs energy
B) A reaction that results in the release of energy in the form of heat
C) A reaction that requires energy
D) A reaction that produces no energy
Answer: B. An exothermic reaction results in the release of energy in the form of heat .
11. What is the definition of "combustion"?
A) The melting of materials
B) A chemical process of oxidation that occurs at a rate fast enough to produce heat and
usually light
C) The cooling of materials
D) The decomposition of materials
Answer: B. Combustion is a chemical process of oxidation that occurs at a rate fast enough
to produce heat and usually light in the form of either a glow or a flame .
12. What is "conduction" in fire investigation?
A) Heat transfer through a solid material
B) Heat transfer through a fluid
C) Heat transfer through electromagnetic waves
D) Heat transfer through a vacuum