What is considered a flammable liquid?

• A. Water
• B. Glycerin
• C. Benzene
• D. Sand

Answer: (C)

A flammable liquid is defined as any liquid that can readily ignite and sustain combustion when exposed to an ignition source. Benzene fits this definition as it has a low flash point (approximately 12°C or 54°F), meaning it can produce enough vapor to ignite at relatively low temperatures. Its ability to easily vaporize and create a flammable mixture with air makes it a significant fire hazard in both industrial and laboratory settings.

In contrast, water, glycerin, and sand do not possess these combustible properties. Water is a non-combustible liquid and is often used to extinguish fires. Glycerin, although it has some flammable characteristics, requires very high temperatures to ignite, placing it outside the typical classification of flammable liquids. Sand is an inert substance that does not burn, and it is often used as a fire prevention tool by smothering flames. Thus, benzene stands out as the only option that fits the criteria for a flammable liquid.