Question

why is it made compulsory to mix ethanol in a fuel

Answer 1

Ethanol is a renewable content and is the by product of the sugar industry. the reason ethanol is mixed with fuelis because it burns itself clear resulting in a decrease in the carbon mono-oxide, carbon dioxide and hydrocarbons which are the main reasons for air pollution

Answer 2

because ethanol is somewhat eco friendly and produces less pollution. secondly It undergoes combustion completely.