Explain how does the –OH group attached to a carbon of benzene ring activate it towards electrophilic substitution?

Explain how does the (---OH) group attached to a carbon of benzene ring activate it towards electophililc substitution.

The correct order of reactivity towards electrophilic substitution is

How many of the following are activated towards electrophilic aromatic substitution reactions?

Give the increasing order of reactivity towards electrophilic substitution.

Account for the following: If -NO_(2) or-COOH group is attached to carbon of benzene ring, electrophilic substitution becomes difficult.

Which of the following is the most reactive towards electrophilic substitution?

Among the compounds the order of decreasing reactivity towards electrophilic substitution is

Which of the following compounds are not arranged in order of decreasing reactivity towards electrophilic substitution