Which liquid is noted for having the highest specific gravity?

Specific gravity is a measure that compares the density of a substance to the density of water. A liquid with a high specific gravity indicates that it is much denser than water. Among the options provided, kerosene has the highest specific gravity, typically ranging from about 0.78 to 0.81. This means that kerosene is denser than water, which has a specific gravity of 1.

Gasoline, acetone, and ethanol have lower specific gravities, meaning they are less dense compared to water. Gasoline has a specific gravity of about 0.71 to 0.77, acetone is around 0.79, and ethanol is approximately 0.789. Therefore, kerosene stands out as the liquid with the highest specific gravity in this list, which is an essential characteristic to consider in firefighting scenarios, as it can affect how these liquids behave when involved in fires.