Question

Which of the following group is sharp ortho and para directive?

• A. $-C_6{H}_5$
• B. $-OH$
• C. $-C{H}_3$
• D. $-Cl$

Answer 1

The correct option is B $-OH$

All the groups are $o-$ and p-directive. But in $-OH$ group, lone pair of electron present at o-atom increases electron density for electrophile at o- and p-positions. Thus, it is sharp o- and p- directive.