Combustible liquids are those that have a flashpoint at or above what temperature?

Combustible liquids are those that have a flashpoint at or above what temperature?

• A. 80
• B. 100
• C. 120
• D. 50

Answer: (B)

The key idea is how flashpoint is used to classify liquids. The flashpoint is the lowest temperature at which enough vapor is produced to form an ignitable mixture with air when there’s an ignition source present. If that temperature is at or above 100°F, the liquid is considered combustible rather than flammable. This threshold matters because it guides safety practices for storage, handling, and controls for ignition sources. For context, liquids like kerosene or diesel have flashpoints around this range, meaning they’re treated as combustible, while liquids with flashpoints below 100°F are classified as flammable.

The key idea is how flashpoint is used to classify liquids. The flashpoint is the lowest temperature at which enough vapor is produced to form an ignitable mixture with air when there’s an ignition source present. If that temperature is at or above 100°F, the liquid is considered combustible rather than flammable. This threshold matters because it guides safety practices for storage, handling, and controls for ignition sources. For context, liquids like kerosene or diesel have flashpoints around this range, meaning they’re treated as combustible, while liquids with flashpoints below 100°F are classified as flammable.