A nauseating smell in the carbylamine test for primary aminesis due to the formation of

Options

A. Isocyanide
B. Chloroform
C. Cyanide
D. DDT

Answer

To solve the question regarding the nauseating smell in the carbylamine test for primary amines, we will follow these steps:

### Step 1: Understand the Carbylamine Test
The carbylamine test is a qualitative test used to detect primary amines. When a primary amine reacts with chloroform (CHCl3) in the presence of a strong base like potassium hydroxide (KOH), a specific product is formed.

**Hint**: Remember that the carbylamine test is specifically for primary amines.

### Step 2: Identify the Reactants
The reactants in the carbylamine test are:
- A primary amine (RNH2)
- Chloroform (CHCl3)
- A strong base (KOH)

**Hint**: Focus on the type of amine involved in this reaction.

### Step 3: Write the Reaction
The reaction can be summarized as follows:
\[ \text{RNH}_2 + \text{CHCl}_3 + \text{KOH} \rightarrow \text{RNC} + \text{by-products} \]
Here, R is the alkyl or aryl group attached to the amine.

**Hint**: Consider what happens to the chloroform and the amine when they react.

### Step 4: Identify the Product
The product formed from this reaction is isocyanide (also known as carbylamine), which is represented as RNC. Isocyanides are known for their foul or nauseating smell.

**Hint**: Recall the characteristics of isocyanides and their smell.

### Step 5: Conclusion
The nauseating smell in the carbylamine test for primary amines is due to the formation of isocyanide (RNC).

**Final Answer**: A nauseating smell in the carbylamine test for primary amines is due to the formation of isocyanide.

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