Question

Which of the following is a secondary alcohol?

• A. Butan-2-ol
• B. 2-Methylpropan-2-ol
• C. 2-Methylpentan-2-ol
• D. All of the above

Answer 1

The correct option is A Butan-2-ol

Structure of option (a) is
Structure of option (b) is
Structure of option (c) is
In option (a), number of H atoms attached to $s{p}^3-C$ is 1 and $-OH$ group is attached to secondary carbon atom.​ In option (b) and (c), number of H atoms attached to $s{p}^3-C$ is zero and $-OH$ group is attached to tertiary carbon atom. Hence, the correct answer is option (a).