Chlorobenzene reacts with_____in presence of conc. `H_(2)SO_(4)` to form DDT.

Explanation

To solve the question, "Chlorobenzene reacts with_____ in presence of conc. H2SO4 to form DDT," we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- We start with Chlorobenzene (C6H5Cl). The question asks for another reactant that will combine with Chlorobenzene in the presence of concentrated sulfuric acid (H2SO4) to form DDT.

2. **Understand the Reaction Conditions**:
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