Isocyanide test is used for the detection of primary/ secondary amines.

Explanation

### Step-by-Step Solution:

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

2. **Reaction Mechanism**:
- When a primary amine (R-NH2) reacts with chloroform and alcoholic KOH, the amine first deprotonates to form an amine anion (R-NH^-).
- The amine anion then attacks the chloroform, leading to the formation of an isocyanide (R-NC) and byproducts such as potassium chloride (KCl) and water (H2O).
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