Question

The fuels which are prepared from natural fuels by various physical and chemical processes are known as _________.

Answer 1

1. Manufactured or processed fuels are secondary fuels.
2. Secondary fuels are fuels that are created through chemical or physical processes from a primary fuel or fuels.
3. These are fuels that cannot be obtained from natural sources.
4. Primary energy sources provide the initial energy for these secondary fuels.
5. The best example of a secondary fuel is gasoline.

The fuels which are prepared from natural fuels by various physical and chemical processes are known as manufactured or processed fuels.