Firefighter Aptitude and Character Test (FACT) 2025 – 400 Free Practice Questions to Pass the Exam

The vapor density of kerosene is approximately 2.80. Vapor density is a measurement that compares the density of a vapor to that of air. A vapor density greater than 1 indicates that the vapor is heavier than air, which means it will tend to stay close to the ground and could accumulate in low-lying areas. This characteristic is significant for firefighters and first responders because it aids in understanding the behavior of kerosene vapor in various environments, especially during spills or leaks.

Thus, knowing that kerosene has a vapor density of 2.80 highlights the potential hazards associated with its vapor, as it could pose a risk of flammability and toxicity in confined spaces. Understanding these properties is essential for safe handling and response to incidents involving kerosene or similar hydrocarbons.