I. Give various functional isomers of butanenitrile and give their isomeric relations.

Explanation

To find the various functional isomers of butanenitrile and their isomeric relations, we will follow these steps:

### Step 1: Identify the structure of butanenitrile
Butanenitrile has the molecular formula C4H7N. Its structure can be represented as:
- CH3-CH2-CH2-C≡N (where C≡N is the nitrile functional group).

### Step 2: Determine possible functional isomers
Functional isomers are compounds that have the same molecular formula but different functional groups. For butanenitrile, the possible functional isomers include:
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