The test is done for the differentiation of primary amines from secondary and tertiary amine is :

Options

A. Hell - Volhard Zelinsky reaction
B. Tollen's reagent
C. Azo dye test
D. Carbylamine test

Answer

To differentiate primary amines from secondary and tertiary amines, the test that is commonly used is the **Carbylamine test**. Here’s a step-by-step explanation of how this test works:

### Step-by-Step Solution:

1. **Understanding the Carbylamine Test**:
- The Carbylamine test is specifically used to identify primary amines. It involves the reaction of a primary amine with chloroform (CHCl3) in the presence of a strong base, typically potassium hydroxide (KOH).

2. **Reaction Process**:
- When a primary amine (RNH2) reacts with chloroform in the presence of KOH, it forms an isocyanide (also known as carbylamine). The reaction can be summarized as follows:
\[ RNH_2 + CHCl_3 + 3KOH \rightarrow R-NC + 3KCl + 3H_2O \]
- Here, R represents the alkyl or aryl group attached to the amine.

3. **Observation**:
- The formation of isocyanide is significant because isocyanides are known for their foul smell. Therefore, if a foul-smelling compound is produced, it indicates the presence of a primary amine.

4. **No Reaction with Secondary and Tertiary Amines**:
- Secondary amines (R2NH) and tertiary amines (R3N) do not react in the same way. When subjected to the Carbylamine test, they do not produce isocyanides, and thus no foul smell is observed.

5. **Conclusion**:
- The Carbylamine test is a definitive method for distinguishing primary amines from secondary and tertiary amines based on the production of a foul-smelling isocyanide.

### Final Answer:
The test done for the differentiation of primary amines from secondary and tertiary amines is the **Carbylamine test**.

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