IAAI-CFI STYLE PRACTICE EXAM – FULL 200
QUESTIONS (1–200)
QUESTIONS 1–50
1. According to NFPA 1033, which of the following is a mandatory core
competency for a Fire Investigator?
A) Proficiency in structural engineering design
B) Knowledge of building construction and structural collapse
C) Certification as a professional engineer
D) Experience in law enforcement
Answer: B
2. The scientific method used in fire investigation consists of which of the
following steps in correct order?
A) Analyze data, collect data, develop hypothesis, test hypothesis, define problem
B) Define problem, collect data, analyze data, develop hypothesis, test hypothesis
C) Collect data, define problem, analyze data, test hypothesis, develop hypothesis
D) Develop hypothesis, collect data, analyze data, define problem, test hypothesis
Answer: B
3. Which of the following best describes "flashover"?
A) The ignition of unburned gases in the upper layer
B) The rapid transition from a growing fire to a fully developed fire
C) The explosion of a flammable liquid container
,D) The spontaneous ignition of pyrolysis products
Answer: B
4. The primary mechanism of heat transfer that causes ignition of materials at a
distance from the fire source is:
A) Conduction
B) Convection
C) Radiation
D) Advection
Answer: C
5. Which of the following is true regarding "backdraft"?
A) It occurs when fresh air is introduced to a ventilation-limited fire
B) It is the same as a flashover
C) It occurs in the decay stage only
D) It requires no oxygen to occur
Answer: A
6. The lowest temperature at which a liquid produces enough vapor to ignite
momentarily (but not sustain combustion) is the:
A) Fire point
B) Flash point
C) Autoignition temperature
D) Ignition temperature
Answer: B
7. Which fire pattern is most indicative of a liquid accelerant pour?
A) Uniform charring across the entire floor
B) Deep charring with an irregular, pool-shaped pattern
,C) A clean, sharp "V" pattern on the wall
D) Spalling of concrete in a circular shape
Answer: B
8. The term "spalling" refers to:
A) The cracking of glass due to thermal stress
B) The flaking or chipping of concrete or masonry due to heat
C) The blistering of painted surfaces
D) The melting of aluminum wiring
Answer: B
9. In a compartment fire, the upper layer is primarily heated by:
A) Conduction through the floor
B) Convection from the fire plume
C) Radiation from the floor
D) Direct flame contact on the ceiling
Answer: B
10. Which of the following is a Class C fire?
A) Wood, paper, and cloth
B) Flammable liquids and gases
C) Energized electrical equipment
D) Combustible metals
Answer: C
11. "Pyrolysis" is defined as:
A) The combustion of a solid in the presence of oxygen
B) The thermal decomposition of a material in the absence of oxygen
C) The vaporization of a liquid fuel
, D) The oxidation of a metal
Answer: B
12. Which of the following is a reliable indicator of fire origin?
A) The lowest point of char
B) The area of most intense burning
C) The deepest spalling on concrete
D) The convergence of multiple fire patterns
Answer: D
13. According to NFPA 921, the "area of origin" is defined as:
A) The exact point where ignition occurred
B) The room or compartment where the fire started
C) The general location where the fire began
D) The point of least damage
Answer: C
14. Which type of glass fracture is caused by thermal stress?
A) Concentric cracks
B) Radial cracks
C) Both radial and concentric cracks
D) Hackle marks only
Answer: A
15. The color of smoke from a fire can indicate:
A) The fuel type only
B) The ventilation conditions
C) The temperature of the fire
QUESTIONS (1–200)
QUESTIONS 1–50
1. According to NFPA 1033, which of the following is a mandatory core
competency for a Fire Investigator?
A) Proficiency in structural engineering design
B) Knowledge of building construction and structural collapse
C) Certification as a professional engineer
D) Experience in law enforcement
Answer: B
2. The scientific method used in fire investigation consists of which of the
following steps in correct order?
A) Analyze data, collect data, develop hypothesis, test hypothesis, define problem
B) Define problem, collect data, analyze data, develop hypothesis, test hypothesis
C) Collect data, define problem, analyze data, test hypothesis, develop hypothesis
D) Develop hypothesis, collect data, analyze data, define problem, test hypothesis
Answer: B
3. Which of the following best describes "flashover"?
A) The ignition of unburned gases in the upper layer
B) The rapid transition from a growing fire to a fully developed fire
C) The explosion of a flammable liquid container
,D) The spontaneous ignition of pyrolysis products
Answer: B
4. The primary mechanism of heat transfer that causes ignition of materials at a
distance from the fire source is:
A) Conduction
B) Convection
C) Radiation
D) Advection
Answer: C
5. Which of the following is true regarding "backdraft"?
A) It occurs when fresh air is introduced to a ventilation-limited fire
B) It is the same as a flashover
C) It occurs in the decay stage only
D) It requires no oxygen to occur
Answer: A
6. The lowest temperature at which a liquid produces enough vapor to ignite
momentarily (but not sustain combustion) is the:
A) Fire point
B) Flash point
C) Autoignition temperature
D) Ignition temperature
Answer: B
7. Which fire pattern is most indicative of a liquid accelerant pour?
A) Uniform charring across the entire floor
B) Deep charring with an irregular, pool-shaped pattern
,C) A clean, sharp "V" pattern on the wall
D) Spalling of concrete in a circular shape
Answer: B
8. The term "spalling" refers to:
A) The cracking of glass due to thermal stress
B) The flaking or chipping of concrete or masonry due to heat
C) The blistering of painted surfaces
D) The melting of aluminum wiring
Answer: B
9. In a compartment fire, the upper layer is primarily heated by:
A) Conduction through the floor
B) Convection from the fire plume
C) Radiation from the floor
D) Direct flame contact on the ceiling
Answer: B
10. Which of the following is a Class C fire?
A) Wood, paper, and cloth
B) Flammable liquids and gases
C) Energized electrical equipment
D) Combustible metals
Answer: C
11. "Pyrolysis" is defined as:
A) The combustion of a solid in the presence of oxygen
B) The thermal decomposition of a material in the absence of oxygen
C) The vaporization of a liquid fuel
, D) The oxidation of a metal
Answer: B
12. Which of the following is a reliable indicator of fire origin?
A) The lowest point of char
B) The area of most intense burning
C) The deepest spalling on concrete
D) The convergence of multiple fire patterns
Answer: D
13. According to NFPA 921, the "area of origin" is defined as:
A) The exact point where ignition occurred
B) The room or compartment where the fire started
C) The general location where the fire began
D) The point of least damage
Answer: C
14. Which type of glass fracture is caused by thermal stress?
A) Concentric cracks
B) Radial cracks
C) Both radial and concentric cracks
D) Hackle marks only
Answer: A
15. The color of smoke from a fire can indicate:
A) The fuel type only
B) The ventilation conditions
C) The temperature of the fire
