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Alcohol is produced with the help of __________

  1. Yeast
  2. Blue green algae
  3. Virus
  4. All of these

Answer: Yeast


Long Answer:

Alcohol is produced with the help of Yeast. Yeast is used for commercial
production of alcohol and wine. For this
purpose yeast is grown on natural sugars
present in grains like barley, wheat, rice,
crushed fruit juices, etc.