Distinction between pairs of compounds
Aniline `(C_(6)H_(5)NH_(2))` and N-methylaniline

Explanation

To distinguish between aniline `(C₆H₅NH₂)` and N-methylaniline `(C₆H₅N(CH₃)₂)`, we can analyze their structures and chemical properties. Here’s a step-by-step breakdown:

### Step 1: Identify the Structures
- **Aniline**: Aniline is a primary amine where the amino group `(-NH₂)` is directly attached to a benzene ring. Its structure can be represented as:
```
C₆H₅
|
NH₂
...