What are the IUPAC names of the insecticide DDT and benzene hexachloride? Why is their use banned in India and other countries?

Explanation

### Step-by-Step Solution:

**Step 1: Identify the IUPAC name of DDT.**

- DDT stands for Dichloro-Diphenyl-Trichloroethane.
- To derive its IUPAC name, we need to analyze its structure. DDT consists of two phenyl groups (chlorinated benzene rings) attached to a central ethane chain that has three chlorine atoms attached to one of the carbons.
- The IUPAC name is derived as follows:
- The main chain is ethane (2 carbon atoms).
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