The major final product of Nitration of Nitrobenzene should be:

a. Para nitrobenzene
b. Meta nitrobenzene
c. Ortho nitrobenzene

Answer: b. The nitro group is a meta directing group. Therefore, the major final product of nitration of nitrobenzene should be meta-nitrobenzene.

Common meta directing groups:

1. -NO2
2. -NO
3. -NR3+
4. -COR
5. CX3 (X = F, CL, Br, I)
6. -CN
7. -SO3H