What alkyl halide would yield each of the following pure alkene on reaction with alcoholic KOH ?
`CH_(3)-CH_(2)-underset(CH_(3))underset(|)(C)=CH_(2)`

Explanation

To determine the alkyl halide that would yield the given alkene upon reaction with alcoholic KOH, we need to analyze the structure of the alkene provided: `CH3-CH2-CH(CH3)=CH2`.

### Step-by-Step Solution:

1. **Identify the Structure of the Alkene**:
The given alkene is `CH3-CH2-CH(CH3)=CH2`. This can be broken down as follows:
- The longest carbon chain has four carbons (butane).
- There is a double bond between the second and third carbon atoms.
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