The temperature at which a liquid fuel, once ignited, will continue to burn is known as?

The temperature at which a liquid fuel, once ignited, will continue to burn is known as?

• A. Fire point
• B. Flash point
• C. Autoignition temperature
• D. Ignition temperature

Answer: (A)

Fire point is the temperature at which vapors produced by a liquid fuel will continue to burn after ignition, meaning the flame sustains itself without needing a continuous external flame. This shows sustained combustion rather than just a brief ignition. By contrast, the flash point is the lowest temperature at which vapors can form an ignitable mixture and briefly flash when exposed to a flame, but the flame may not continue. Autoignition temperature is the point where the fuel-air mixture will ignite without any flame or spark, and ignition temperature is the temperature at which ignition can occur with an ignition source but doesn’t necessarily imply sustained burning. So the description—“once ignited, will continue to burn”—fits the fire point.

Fire point is the temperature at which vapors produced by a liquid fuel will continue to burn after ignition, meaning the flame sustains itself without needing a continuous external flame. This shows sustained combustion rather than just a brief ignition. By contrast, the flash point is the lowest temperature at which vapors can form an ignitable mixture and briefly flash when exposed to a flame, but the flame may not continue. Autoignition temperature is the point where the fuel-air mixture will ignite without any flame or spark, and ignition temperature is the temperature at which ignition can occur with an ignition source but doesn’t necessarily imply sustained burning. So the description—“once ignited, will continue to burn”—fits the fire point.