Carbylamine test is used to test ............. amines.

Explanation

### Step-by-Step Solution:

1. **Understanding the Carbylamine Test**: The Carbylamine test is a qualitative test used to identify the presence of primary amines. It involves the reaction of a primary amine with chloroform and alcoholic potassium hydroxide (KOH).

2. **Chemical Reaction**: When a primary amine (R-NH2) is treated with chloroform (CHCl3) and alcoholic KOH, it undergoes a reaction to form an isocyanide (R-NC). The overall reaction can be summarized as follows:
\[ R-NH2 + CHCl3 + 3KOH \rightarrow R-NC + 3KCl + 3H2O \]
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