International General Certificate of Secondary Education (IGCSE) Chemistry Practice Exam

What is a common use of fuel oil?

1. Fuel for cars

2. Heating residential buildings

3. Fuel for ships

4. Industrial lubricant

The correct answer is: Fuel for ships

Fuel oil is commonly used as a fuel for ships. This is due to its high energy content and efficient burning properties, which make it suitable for large marine engines. Ships require a robust and consistent fuel source to sustain long journeys, and fuel oil meets these needs effectively. Using fuel oil for maritime transport allows vessels to achieve the necessary power for propulsion while also storing a significant amount of energy in a compact form, which is crucial for ships operating over extended periods away from port facilities. In contrast, while some other options mention potential uses, they are not as prevalent or practical in comparison to the primary role of fuel oil in marine applications.