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Q1 / 5
Alcohols
Foundation
2 marks
How is ethanol produced by fermentation?
A
Yeast ferments glucose anaerobically: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂; ~30–37°C; then distilled to concentrate
B
Ethanol is made by reacting ethane with water
C
Fermentation requires oxygen and high temperature
D
Only bacteria can ferment glucose to ethanol
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