Flammable liquids (class 1) are defined as having which flash point classification?

Flammable liquids (class 1) are defined as having which flash point classification?

• A. Flash point of less than 100 degrees Celsius
• B. Flash point of 100 degrees Fahrenheit or more
• C. Flash point of less than 100 degrees Fahrenheit
• D. Flash point of 100 degrees Celsius or more

Answer: (C)

A key idea here is how flammable liquids are classified by flash point. The flash point is the lowest temperature at which a liquid’s vapors can ignite in air. For Class I flammable liquids, that point must be below 100 degrees Fahrenheit (about 37.8°C). So liquids with a flash point under 100°F are considered flammable in this class. That’s why the correct choice is the one describing a flash point less than 100°F. The other options mix up the temperature scale or the direction of the threshold, using Celsius values that don’t align with the standard definition.

A key idea here is how flammable liquids are classified by flash point. The flash point is the lowest temperature at which a liquid’s vapors can ignite in air. For Class I flammable liquids, that point must be below 100 degrees Fahrenheit (about 37.8°C). So liquids with a flash point under 100°F are considered flammable in this class. That’s why the correct choice is the one describing a flash point less than 100°F. The other options mix up the temperature scale or the direction of the threshold, using Celsius values that don’t align with the standard definition.