Statement I: Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene
Statement II: −NO2 group is a m-directing group
Answer & explanation
Correct answer: option 4
Statement I: Nitration of chlorobenzene leads to the formation of m-nitrochlorobenzene.
This statement is false. Nitration of chlorobenzene typically results in the formation of a mixture of ortho (o-) and para (p-) nitrochlorobenzene isomers. The m-nitrochlorobenzene isomer is not the major product obtained in the nitration of chlorobenzene.
Statement II: -NO2 group is a m-directing group.
This statement is correct. The -NO2 group is known as a meta-directing group in electrophilic aromatic substitution reactions. It directs incoming groups or substitutions to the meta position on the aromatic ring.
Therefore, the correct answer is: 4. Statement I is false but statement II is correct.