What is the reagent used for dehydrohalogenation of an alkyl halide?

Explanation

To answer the question about the reagent used for dehydrohalogenation of an alkyl halide, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Dehydrohalogenation**:
- Dehydrohalogenation is a chemical reaction where a hydrogen atom and a halogen atom are removed from an alkyl halide, resulting in the formation of an alkene.

2. **Identifying the Alkyl Halide**:
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