Isocyanide test is used for-

Options

A. Only Primary amine
B. Only secondary amine
C. Only chlorform
D. Only tert. Amine

Answer

To answer the question "Isocyanide test is used for-", we will follow these steps:

### Step 1: Understand the Isocyanide Test
The isocyanide test, also known as the carbolamine reaction, is a chemical test used to identify primary amines.

**Hint:** Remember that the isocyanide test is specifically associated with primary amines.

### Step 2: Identify the Reactants
In the isocyanide test, a primary amine (RNH2) reacts with chloroform (CHCl3) in the presence of a base, typically potassium hydroxide (KOH), under heating conditions.

**Hint:** Focus on the reactants: primary amine, chloroform, and a strong base.

### Step 3: Write the Reaction
The reaction can be summarized as follows:
- RNH2 + CHCl3 + KOH (alcoholic) → R-N=C + KCl + H2O

This reaction produces an isocyanide (R-N=C), potassium chloride (KCl), and water (H2O).

**Hint:** Pay attention to the formation of isocyanide as the key product of this reaction.

### Step 4: Determine the Type of Amines
The isocyanide test is specific to primary amines. Secondary and tertiary amines do not produce isocyanides when subjected to this test.

**Hint:** Recall that only primary amines will yield a positive result in the isocyanide test.

### Step 5: Conclusion
The isocyanide test is used to identify primary amines and distinguish them from secondary and tertiary amines, which do not react in the same way.

**Hint:** Conclude by summarizing that the test is a distinguishing feature for primary amines.

### Final Answer
The isocyanide test is used for identifying primary amines.