Question 493Steam Plants - Assistant Engineer

The correct answer is A) Hydrocarbons. The specific heat of a fuel oil is primarily determined by its hydrocarbon composition. Hydrocarbons, which are the main constituent of fuel oils, have a specific heat capacity that varies depending on their molecular structure and composition. The specific heat of a fuel oil is an important property that affects its ability to absorb and release heat, which is crucial for engine performance and efficiency. The other options, B) Oxygen, C) Nitrogen, and D) Sulfur, are not the primary determinants of the specific heat of fuel oil. These elements may be present in small quantities in fuel oils, but they do not have a significant impact on the overall specific heat of the fuel.