Fire 101 Exam Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

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. 2 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. 3 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. 4 What does the term “overhaul” mean in firefighting? Searching for and extinguishing hidden fires after knockdown. What is the term for a sudden fire explosion caused by introducing oxygen into a smoldering environment? Backdraft.