Question

It was known and used in Egypt around 3000 BC, but its name actually comes from an old French expression. It is made by fermenting ethanol, a process that produces its key ingredient, ethanoic acid. What is this substance?

• A. Tabasco Sauce
• B. Phenol
• C. Vinegar
• D. Soya Sauce

Hint:

Its name comes from the French words for sour wine.

Answer 1

The Correct Option is C

The question gives three clues: ancient use in Egypt, a French-derived name, and production by fermenting ethanol into ethanoic acid, also called acetic acid.

1. Tabasco Sauce: This is a modern hot sauce made from chili peppers, first sold in the 1860s in the USA, so it has no link to 3000 BC Egypt or a French name.
2. Phenol: Phenol is a chemical compound used in disinfectants and plastics, made from benzene, not from fermenting ethanol, so it does not match the process described.
3. Vinegar: Its name comes from the old French words vin aigre, meaning sour wine, and it forms when ethanol ferments further into acetic acid. Egyptians used it thousands of years ago as a food preservative.
4. Soya Sauce: This sauce comes from fermented soybeans in East Asia, and its name has no French root, so it does not fit either clue.

Only vinegar matches the French name origin, the ancient Egyptian use, and the ethanol fermentation process.

Let's summarize:

• A French name plus ethanol fermentation to acetic acid points only to vinegar.

So the answer is vinegar.