Which of the following is a commonly used combustible liquid that can produce explosions inside equipment?

The correct answer identifies diesel as a commonly used combustible liquid that can produce explosions inside equipment. Diesel fuel is frequently used in various industrial applications, including heavy machinery and power generation. It is a combustible liquid with a flash point generally between 52°C (126°F) and 96°C (205°F), making it capable of forming flammable vapors under certain conditions. This potential for vapor formation can lead to explosive atmospheres, especially in poorly ventilated spaces or when equipment is not properly maintained.

While gasoline, kerosene, and hexane are also combustible liquids that can pose explosion hazards, their usage in specific applications can vary significantly. Gasoline has a much lower flash point than diesel, which increases its volatility and explosion risk, but it is not typically the preferred fuel for heavy machinery. Kerosene, often used in heating, cooking, and as a jet fuel, has characteristics that can lead to significant hazards as well, but it is less commonly used compared to diesel in the industrial sector. Hexane is primarily utilized as a solvent and is not commonly classified as a fuel in the same contexts as the others mentioned.

Therefore, diesel's versatility and frequent application in environments where explosive hazards are a concern bolster its selection as the correct answer