Flammable liquids have a flash point that is

Flammable liquids have a flash point that is

• A. less than 100
• B. greater than 100
• C. equal to 100
• D. variable

Answer: (A)

The key idea is what the flash point tells you about flammability. The flash point is the lowest temperature at which a liquid’s vapors are produced in enough quantity to form an ignitable mixture with air. Flammable liquids have flash points below 100°F (37.8°C), meaning their vapors can ignite at relatively low temperatures. That’s why the correct statement is that the flash point is less than 100. A flash point at or above 100°F would classify the liquid as combustible, not flammable.

The key idea is what the flash point tells you about flammability. The flash point is the lowest temperature at which a liquid’s vapors are produced in enough quantity to form an ignitable mixture with air. Flammable liquids have flash points below 100°F (37.8°C), meaning their vapors can ignite at relatively low temperatures. That’s why the correct statement is that the flash point is less than 100. A flash point at or above 100°F would classify the liquid as combustible, not flammable.