Which type of fuel the coal is?

Which type of fuel the coal is?

Options:

a. conventional fuel
b. non-conventional fuel
c. renewable fuel
d. none of the above

Correct Answer: a. conventional fuel

Explanation:

The conventional fuels are the fossil fuels and are generally non-renewable. The coal is also a conventional fuel and it is obtained from coal mining. The use of conventional fuels leads to increase in green house gases. They are harmful to environment. Nuclear energy, geothermal energy are also come under the category of conventional fuel.

To reduce the harmful effects of the conventional fuels, the renewable or alternative fuels should be used. The renewable fuels include wind energy, solar energy, tidal energy etc.