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

Step 1: Break down the name clue.
The substance's name traces back to the French vin aigre, which means sour wine, a strong hint toward a wine-linked product.

Step 2: Check the chemistry clue.
It forms when ethanol ferments further and yields ethanoic acid, the chemical name for acetic acid, the compound that gives this substance its sour, sharp taste.

Step 3: Check the history clue.
Records show this substance was already known and used in Egypt as far back as 3000 BC for preserving and flavoring food.

Final Answer:
All three clues, the French name, the ethanol fermentation, and the ancient Egyptian use, point to vinegar. \[ \boxed{\text{Vinegar}} \]