The major product ' D ' of the following reaction is:

Step-by-step solution

The starting material is nitrobenzene. Nitrobenzene undergoes electrophilic aromatic substitution with Cl₂/AlCl₃ . Since the -NO₂ group is meta-directing, the chlorine atom enters the meta position, forming A, which is 1-chloro-3-nitrobenzene. In the next step, A (1-chloro-3-nitrobenzene) is treated with Zn/HCl , which is a reducing agent. This reduces the nitro group ( -NO₂ ) to an amino group ( -NH₂ ), resulting in B, which is 3-chloroaniline. Next, B (3-chloroaniline) is treated with HNO₂ at 0-5^ C . This is a d