Question

Upon addition of ferric chloride reagent to alcoholic solution of clove oil gives _____ color indicating presence of eugenol.

• A. Yellow
• B. Blue
• C. Green
• D. Brown

Hint:

Clove Oil (Eugenol) + $FeCl_{3}$ = Blue color.

Answer 1

The Correct Option is B

Step 1: Concept
Eugenol is the major phenolic constituent of clove oil.

Step 2: Meaning
Ferric chloride ($FeCl_{3}$) is a common reagent used to test for the presence of phenolic hydroxyl groups.

Step 3: Analysis
Phenols react with ferric chloride to form colored complex salts. In the case of eugenol found in clove oil, the reaction yields a characteristic blue color.

Step 4: Conclusion
The blue color change serves as a qualitative identification test for eugenol in clove oil samples.

Final Answer: (B)