Hazard Class 3 includes:

Hazard Class 3 includes:

• A. Black powder and ammonium nitrate
• B. Acetone
• C. Gasoline
• D. Magnesium

Answer: (C)

Hazard Class 3 covers flammable liquids—these are substances with a flash point of 60°C (140°F) or lower. Gasoline is a textbook example of a Class 3 flammable liquid because it has a very low flash point, making it highly flammable and a standard reference in training and safety guidance. The other items don’t belong to this class for distinct reasons: black powder is an explosive rather than a liquid fuel, and ammonium nitrate is an oxidizer (not a flammable liquid). Magnesium is a flammable solid, not a liquid, so it’s classified differently. Acetone is indeed a flammable liquid and would also fall under Class 3, but gasoline is the clearest, most representative example among the options.

Hazard Class 3 covers flammable liquids—these are substances with a flash point of 60°C (140°F) or lower. Gasoline is a textbook example of a Class 3 flammable liquid because it has a very low flash point, making it highly flammable and a standard reference in training and safety guidance.

The other items don’t belong to this class for distinct reasons: black powder is an explosive rather than a liquid fuel, and ammonium nitrate is an oxidizer (not a flammable liquid). Magnesium is a flammable solid, not a liquid, so it’s classified differently. Acetone is indeed a flammable liquid and would also fall under Class 3, but gasoline is the clearest, most representative example among the options.