Azo dye test can be used to distinguish aromatic primary amines from aliphatic primary amines.

Explanation

To solve the question regarding the Azo dye test and its ability to distinguish between aromatic and aliphatic primary amines, we can break down the explanation into clear steps:

### Step-by-Step Solution:

1. **Understanding Primary Amines**:
- Primary amines are classified as either aromatic (containing a benzene ring) or aliphatic (not containing a benzene ring). Examples include aniline (aromatic) and ethylamine (aliphatic).

2. **Azo Dye Test Overview**:
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