Which of the following substances would not produce ethanol when fermented?
Answer Details
Fermentation is a process by which microorganisms such as yeast convert sugars into alcohol, such as ethanol. The process occurs under anaerobic conditions, meaning in the absence of oxygen. The microorganisms break down the sugar molecules into ethanol and carbon dioxide.
Out of the given options, vinegar would not produce ethanol when fermented because vinegar is a diluted solution of acetic acid, not a sugar. It is produced by the fermentation of ethanol by acetic acid bacteria, which convert the ethanol into acetic acid.
On the other hand, cane sugar, glucose, and starch are all sources of fermentable sugars and can be used to produce ethanol when fermented. Therefore, the correct option is (D) Vinegar.