Write industrial production of ethanol.

1. Industrial production of ethanol by fermentation process- Fermentation is a process in which sugar or molasses is converted into ethanol and CO₂ gas by enzymes. It is an anaerobic process (In such reactions, presence oxygen is not necessary). In this reaction, sugar or molasses first converted into glucose and fructose by enzyme invertase. And then glucose and fructose converted into ethanol and CO2 gas by enzyme zymase.

C₁₂H₂₂O₁₁ + H₂O C₆H₁₂O₆ + C₆H₁₂O₆

C₆H₁₂O₆2C₂H₅OH + 2CO₂

2. Modern method of Industrial production of Ethanol- In this method, the industrial production of ethanol is carried out by hydration of ethene in the presence of concentrated sulphuric acid.

CH₂=CH₂ + H₂O CH₃CH₂OH