Which statement is true about polar solvent fuels?

• A. They Are Flammable Liquids That Mix Readily With Water
• B. They Are Non-Flammable
• C. They Do Not Mix With Water
• D. They Evaporate Immediately

Answer: (A)

Polar solvent fuels have molecules with a noticeable polarity, which makes them mix readily with water and often burn at relatively low temperatures. That combination—being flammable and water-miscible—summarizes their typical behavior: they can form homogeneous mixtures with water, which affects how they spread and how they’re fought in a fire. Examples like ethanol and acetone illustrate this: they readily mix with water and will flash to vapor easily, contributing to a fire risk.

The other statements don’t fit because not all polar solvents are nonflammable, the fact they mix with water is well established for many of them, and evaporation isn’t guaranteed to be immediate— it varies by substance and conditions.