Fire 101 Exam Questions and Answers
| Latest Version | 2025/2026 | Correct &
Verified
What is the chemical chain reaction in fire called?
✔✔The fire tetrahedron.
What is the most common ignition source in residential fires?
✔✔Cooking equipment.
What is the main product of incomplete combustion?
✔✔Carbon monoxide.
What does the term “flashover” describe?
✔✔A near-simultaneous ignition of all combustible materials in a room.
What is the lowest temperature at which a substance will ignite without a spark or flame?
✔✔Autoignition temperature.
1
,What is the main purpose of a fire extinguisher rating system?
✔✔To indicate the types and sizes of fires it can extinguish.
What is the most important factor in fire spread within a building?
✔✔Ventilation.
What does RIT stand for in fire service operations?
✔✔Rapid Intervention Team.
What type of fuel is paper classified as?
✔✔A Class A fuel.
What is the main function of turnout gear?
✔✔To protect firefighters from heat, flames, and debris.
What is the difference between flameover and flashover?
✔✔Flameover is the ignition of gases overhead, while flashover is total room involvement.
2
, What is the common name for a self-contained breathing device used by firefighters?
✔✔SCBA (Self-Contained Breathing Apparatus).
What is the most common cause of firefighter line-of-duty deaths?
✔✔Sudden cardiac events.
What does PPE stand for in firefighting?
✔✔Personal Protective Equipment.
What is the main hazard of carbon monoxide?
✔✔It binds to hemoglobin and prevents oxygen transport.
What does the term “thermal layering” refer to?
✔✔The separation of hot and cool gases inside a burning structure.
What is the first step in size-up at a fire scene?
✔✔Conducting a 360-degree assessment.
3
| Latest Version | 2025/2026 | Correct &
Verified
What is the chemical chain reaction in fire called?
✔✔The fire tetrahedron.
What is the most common ignition source in residential fires?
✔✔Cooking equipment.
What is the main product of incomplete combustion?
✔✔Carbon monoxide.
What does the term “flashover” describe?
✔✔A near-simultaneous ignition of all combustible materials in a room.
What is the lowest temperature at which a substance will ignite without a spark or flame?
✔✔Autoignition temperature.
1
,What is the main purpose of a fire extinguisher rating system?
✔✔To indicate the types and sizes of fires it can extinguish.
What is the most important factor in fire spread within a building?
✔✔Ventilation.
What does RIT stand for in fire service operations?
✔✔Rapid Intervention Team.
What type of fuel is paper classified as?
✔✔A Class A fuel.
What is the main function of turnout gear?
✔✔To protect firefighters from heat, flames, and debris.
What is the difference between flameover and flashover?
✔✔Flameover is the ignition of gases overhead, while flashover is total room involvement.
2
, What is the common name for a self-contained breathing device used by firefighters?
✔✔SCBA (Self-Contained Breathing Apparatus).
What is the most common cause of firefighter line-of-duty deaths?
✔✔Sudden cardiac events.
What does PPE stand for in firefighting?
✔✔Personal Protective Equipment.
What is the main hazard of carbon monoxide?
✔✔It binds to hemoglobin and prevents oxygen transport.
What does the term “thermal layering” refer to?
✔✔The separation of hot and cool gases inside a burning structure.
What is the first step in size-up at a fire scene?
✔✔Conducting a 360-degree assessment.
3
