IAAI CFI EXAM BANK
100 High-Accuracy Questions | 2025/2026 Real Exam Format | Professionally Verified |
A+ Quality
EXAM OVERVIEW
The IAAI CFI EXAM BANK presents a comprehensive and authentic 2025/2026 exam
simulation, meticulously crafted to fortify mastery and readiness. With 100 rigorously
structured questions and a commitment to verified accuracy, this trusted resource sharpens
critical thinking, bolsters confidence, and ensures reliable exam preparation, making it an
indispensable tool for students seeking a high-quality, realistic testing experience.
EXAM FEATURES
• 100 exam-accurate questions aligned with IAAI CFI standards
• Comprehensive coverage of 9 domains for complete preparation
• Verified answers with detailed explanations for confident learning
• High-yield content and time-saving study features
• Realistic practice questions to build confidence for exam success
CORE TESTING AREAS
→ Codes, Standards & Legal Considerations (10 Questions)
→ Evidence Collection & Documentation (8 Questions)
→ Explosion Investigation (13 Questions)
→ Fire Investigation Methodology (12 Questions)
→ Fire Patterns & Evidence Recognition (12 Questions)
→ Fire Protection System (11 Questions)
→ Fire Science & Fire Dynamics (12 Questions)
→ Ignition Sources & Fire Causes (14 Questions)
→ Report Writing & Courtroom Testimony (8 Questions)
Page 1
,Fire Science & Fire Dynamics (12 Questions)
Question 1
In fire dynamics, a combustion wave traveling at a speed greater than the local speed of sound
is classified as which of the following?
A. Deflagration
B. Detonation
C. Flame spread
D. Flashover
Correct Answer
Detonation
Rationale:
Detonation is defined by a supersonic combustion front that generates a shock wave, whereas deflagration
propagates sub‑sonically.
Question 2
During a compartment fire, which heat transfer mechanism becomes dominant in the late stage
and most significantly contributes to flashover?
A. Conduction through walls
B. Convection currents within the hot layer
C. Radiant heat exchange from the fire plume
D. Evaporative cooling from water streams
Correct Answer
Radiant heat exchange from the fire plume
Rationale:
Radiation from the hot fire plume and burning surfaces raises the temperature of all interior surfaces, leading to
simultaneous ignition (flashover).
Page 2
,Question 3
The fire tetrahedron expands upon the traditional fire triangle by adding which fourth element?
A. Inertia
B. Catalyst
C. Chemical chain reaction
D. Pressure
Correct Answer
Chemical chain reaction
Rationale:
The tetrahedron includes fuel, heat, oxidizer, and the sustaining chemical chain reaction, emphasizing the role of
ongoing reactions.
Question 4
A pressurized liquid storage tank fails explosively when its internal pressure exceeds the design
pressure and the liquid undergoes rapid phase change. Which phenomenon best describes this
event?
A. Boiling Liquid Expanding Vapor Explosion (BLEVE)
B. Deflagration
C. Thermal runaway
D. Detonation
Correct Answer
Boiling Liquid Expanding Vapor Explosion (BLEVE)
Rationale:
BLEVE occurs when a vessel containing a pressurized liquid ruptures, causing rapid vaporization and explosive
pressure release.
Page 3
, Question 5
In the t² fire growth model, the heat release rate (HRR) at time t is expressed as HRR = α·t². If a
fire has a growth coefficient α = 0.012 kW/s², what is its HRR after 60 seconds?
A. 43 kW
B. 43 kW
C. 43 kW
D. 43 kW
Correct Answer
43 kW
Rationale:
HRR = 0.012 kW/s² × (60 s)² = 0.012 × 3600 = 43.2 kW, rounded to 43 kW.
Question 6
Which of the following best explains why smoke tends to stratify in a high‑rise building fire?
A. Higher temperature gases become less dense and rise, forming a hot upper layer beneath
the ceiling.
B. Cold air from the HVAC system forces smoke downward.
C. Gravity pulls smoke particles toward the floor.
D. Ventilation fans mix smoke uniformly throughout the space.
Correct Answer
Higher temperature gases become less dense and rise, forming a hot upper layer beneath the
ceiling.
Rationale:
Thermal buoyancy causes hot, less dense smoke to rise and accumulate near the ceiling, creating a distinct upper
layer.
Page 4
100 High-Accuracy Questions | 2025/2026 Real Exam Format | Professionally Verified |
A+ Quality
EXAM OVERVIEW
The IAAI CFI EXAM BANK presents a comprehensive and authentic 2025/2026 exam
simulation, meticulously crafted to fortify mastery and readiness. With 100 rigorously
structured questions and a commitment to verified accuracy, this trusted resource sharpens
critical thinking, bolsters confidence, and ensures reliable exam preparation, making it an
indispensable tool for students seeking a high-quality, realistic testing experience.
EXAM FEATURES
• 100 exam-accurate questions aligned with IAAI CFI standards
• Comprehensive coverage of 9 domains for complete preparation
• Verified answers with detailed explanations for confident learning
• High-yield content and time-saving study features
• Realistic practice questions to build confidence for exam success
CORE TESTING AREAS
→ Codes, Standards & Legal Considerations (10 Questions)
→ Evidence Collection & Documentation (8 Questions)
→ Explosion Investigation (13 Questions)
→ Fire Investigation Methodology (12 Questions)
→ Fire Patterns & Evidence Recognition (12 Questions)
→ Fire Protection System (11 Questions)
→ Fire Science & Fire Dynamics (12 Questions)
→ Ignition Sources & Fire Causes (14 Questions)
→ Report Writing & Courtroom Testimony (8 Questions)
Page 1
,Fire Science & Fire Dynamics (12 Questions)
Question 1
In fire dynamics, a combustion wave traveling at a speed greater than the local speed of sound
is classified as which of the following?
A. Deflagration
B. Detonation
C. Flame spread
D. Flashover
Correct Answer
Detonation
Rationale:
Detonation is defined by a supersonic combustion front that generates a shock wave, whereas deflagration
propagates sub‑sonically.
Question 2
During a compartment fire, which heat transfer mechanism becomes dominant in the late stage
and most significantly contributes to flashover?
A. Conduction through walls
B. Convection currents within the hot layer
C. Radiant heat exchange from the fire plume
D. Evaporative cooling from water streams
Correct Answer
Radiant heat exchange from the fire plume
Rationale:
Radiation from the hot fire plume and burning surfaces raises the temperature of all interior surfaces, leading to
simultaneous ignition (flashover).
Page 2
,Question 3
The fire tetrahedron expands upon the traditional fire triangle by adding which fourth element?
A. Inertia
B. Catalyst
C. Chemical chain reaction
D. Pressure
Correct Answer
Chemical chain reaction
Rationale:
The tetrahedron includes fuel, heat, oxidizer, and the sustaining chemical chain reaction, emphasizing the role of
ongoing reactions.
Question 4
A pressurized liquid storage tank fails explosively when its internal pressure exceeds the design
pressure and the liquid undergoes rapid phase change. Which phenomenon best describes this
event?
A. Boiling Liquid Expanding Vapor Explosion (BLEVE)
B. Deflagration
C. Thermal runaway
D. Detonation
Correct Answer
Boiling Liquid Expanding Vapor Explosion (BLEVE)
Rationale:
BLEVE occurs when a vessel containing a pressurized liquid ruptures, causing rapid vaporization and explosive
pressure release.
Page 3
, Question 5
In the t² fire growth model, the heat release rate (HRR) at time t is expressed as HRR = α·t². If a
fire has a growth coefficient α = 0.012 kW/s², what is its HRR after 60 seconds?
A. 43 kW
B. 43 kW
C. 43 kW
D. 43 kW
Correct Answer
43 kW
Rationale:
HRR = 0.012 kW/s² × (60 s)² = 0.012 × 3600 = 43.2 kW, rounded to 43 kW.
Question 6
Which of the following best explains why smoke tends to stratify in a high‑rise building fire?
A. Higher temperature gases become less dense and rise, forming a hot upper layer beneath
the ceiling.
B. Cold air from the HVAC system forces smoke downward.
C. Gravity pulls smoke particles toward the floor.
D. Ventilation fans mix smoke uniformly throughout the space.
Correct Answer
Higher temperature gases become less dense and rise, forming a hot upper layer beneath the
ceiling.
Rationale:
Thermal buoyancy causes hot, less dense smoke to rise and accumulate near the ceiling, creating a distinct upper
layer.
Page 4
