Which of the following is an advantage of using oil over coal as a boiler fuel?

Using oil as a boiler fuel presents several advantages compared to coal, making the combination of benefits represented in the correct answer highly relevant.

One of the primary advantages is that oil requires less storage space compared to coal. This is because oil can be stored in smaller, more compact containers, whereas coal requires larger storage facilities due to its bulk and volume.

Furthermore, the handling of oil is generally more efficient and costs less. Oil can be transferred through pipelines, and its liquid form allows for easier transportation and storage, reducing the labor and equipment costs associated with coal handling, which often involves heavier equipment and more complex logistics for moving bulk materials.

Another significant point in favor of oil is that the quantity of fuel can be controlled more easily. Oil flow to the boilers can be adjusted with precision, allowing for better management of the steam output and efficiency in the operation. In contrast, coal combustion involves more variables like air-to-fuel ratio and combustion efficiency, which can complicate control measures.

Given these points, the correct choice highlights that all listed factors, including less storage space, reduced handling costs, and easier fuel quantity management, contribute to the advantages of using oil over coal as a boiler fuel.