Which one of these is not compatible with arenes?

The major product of the reaction shown below is:

What is meant by deactivating groups? Explain with suitable examples.

For the electrophilic aromatic substitution reaction on the benzene ring,the substituents are $-CH_3$,$-CH_2Cl$,$-CHCl_2$,and $-CCl_3$. What is the increasing order of reactivity towards electrophilic substitution?

The most appropriate product for the following reaction is:

The major product formed in the reaction is:
$Isopropylbenzene + HNO_3 \xrightarrow{conc. H_2SO_4} ?$