Which one of the following is a secondary alcohol?
2-methyl-2-propanol
1-propanol
1-butanol
2-pentanol
Explanation for correct option
(D) 2-pentanol
Alcohols
Explanation for incorrect options
(A) 2-methyl-2-propanol
(B) 1-propanol
(C) 1-butanol
Therefore, the correct option is (D) 2-pentanol.