Name
Reaction when an alkyl halide is treated with alcoholic potassium hydroxide.

Explanation

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactant is an alkyl halide (RX). For example, let's take ethyl chloride (C2H5Cl) as our alkyl halide.
- The other reactant is alcoholic potassium hydroxide (KOH), which is a strong base.

2. **Determine the Type of Reaction**:
- When an alkyl halide is treated with alcoholic potassium hydroxide, an elimination reaction occurs. This is because the strong base (KOH) facilitates the removal of a hydrogen atom and a halogen atom from the alkyl halide.
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