Question

Butan-2-ol is a:

• A. Primary alcohol
• B. Secondary alcohol
• C. Tertiary alcohol
• D. Dihydric alcohol

Hint:

Alcohol classification depends on the carbon attached to the –OH group: 1° (one C), 2° (two C), 3° (three C).

Answer 1

The Correct Option is B

Step 1: Structure.
Butan-2-ol = CH$_3$–CHOH–CH$_2$–CH$_3$. The –OH group is attached to the second carbon.
Step 2: Classification.
The carbon bearing the –OH group is bonded to two other carbons → it is a secondary alcohol.
Step 3: Conclusion.
Hence, Butan-2-ol is a secondary alcohol.