Iodobenzene when heated with copper powder gives `"toluene" // "diphenyl"` .

Explanation

To solve the question of what product is formed when iodobenzene is heated with copper powder, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactant in this case is iodobenzene (C6H5I), which is an aryl halide.

2. **Understand the Reaction Conditions**:
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