What are the 5 types of biofuel?

The theme for the 2020 World biofuel day is Biofuels towards Atmanirbhar Bharat.

World Biofuel Day is observed every year on 10th August to create awareness about the importance of non-fossil fuels as an alternative to conventional fossil fuels 

For more relevant articles refer to the links given below:

• UPSC Environment and Ecology Questions
• National Policy on Biofuels
• UPSC Environment and Ecology