Which of the following is not an example of a combustible liquid?

Which of the following is not an example of a combustible liquid?

• A. Mineral oil
• B. Peanut oil
• C. Gasoline
• D. Vegetable oil

Answer: (C)

Combustible liquids are defined by having a flash point at or above 100°F (37.8°C). That means they require a relatively higher temperature to form ignitable vapors. Gasoline, however, has a flash point well below that level (about -45°F / -43°C), so it is classified as a flammable liquid, not combustible. The oils listed—mineral oil, peanut oil, and vegetable oil—have flash points above 100°F, so they are considered combustible liquids. Therefore, gasoline is not an example of a combustible liquid.

Combustible liquids are defined by having a flash point at or above 100°F (37.8°C). That means they require a relatively higher temperature to form ignitable vapors. Gasoline, however, has a flash point well below that level (about -45°F / -43°C), so it is classified as a flammable liquid, not combustible. The oils listed—mineral oil, peanut oil, and vegetable oil—have flash points above 100°F, so they are considered combustible liquids. Therefore, gasoline is not an example of a combustible liquid.