Which of the following compounds is optically active ?

Options

A. Butanal
B. Butanol
C. Butan-2-ol
D. 2-methyl propan-2-ol

Answer

C

Explanation

Only chiral or asymmetric carbon ( the carbon , four valencies of which are satisfied by four different groups ) containing compounds are optically active .
`underset("butan-2-ol")(CH_(3)-CH_(2)-underset(OH)underset(|)overset(H)overset(|)(C^(**))-CH_(3))`
(`C^(**)`=chiral carbon atoms )
So, butan-2-ol is optically active .