Which statement is true about Class 3 flammable liquids?

Which statement is true about Class 3 flammable liquids?

• A. They have a flashpoint above 93°C
• B. They have a flashpoint exactly 60°C
• C. They have a flashpoint of 60°C
• D. They are cryogenic

Answer: (C)

Class 3 flammable liquids are categorized by their flash point—the lowest temperature at which enough vapor is produced to form an ignitable mixture with air. The defining threshold for this class is a flash point of 60°C or below. So a liquid with a flash point at 60°C sits right at that cutoff, which is why it’s classified as Class 3. The other statements don’t fit the definition: a flash point above 60°C would not be Class 3, and cryogenic materials are a completely different category defined by very low temperatures.

Class 3 flammable liquids are categorized by their flash point—the lowest temperature at which enough vapor is produced to form an ignitable mixture with air. The defining threshold for this class is a flash point of 60°C or below. So a liquid with a flash point at 60°C sits right at that cutoff, which is why it’s classified as Class 3. The other statements don’t fit the definition: a flash point above 60°C would not be Class 3, and cryogenic materials are a completely different category defined by very low temperatures.