Explain the following reactions by giving one example :
(i) Carbylamine reaction (ii) Sandmeyer's reaction
(iii) Balz-Schiemann reaction

Explanation

### Step-by-Step Text Solution

#### (i) Carbylamine Reaction
The Carbylamine reaction involves the reaction of primary amines with chloroform (CHCl₃) in the presence of a strong base such as potassium hydroxide (KOH). When a primary amine (RNH₂) is heated with chloroform and KOH, it produces isocyanide (also known as carbylamine) and potassium chloride (KCl) as a byproduct.

**Example:**
Consider the reaction of ethylamine (C₂H₅NH₂) with chloroform and KOH:
1. **Reactants:** Ethylamine (C₂H₅NH₂) + Chloroform (CHCl₃) + KOH
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