Can we perform the charcoal cavity test without the addition of fusion mixture `(Na_(2)CO_(3)` and `K_(2)CO_(3))` with the carbonate of metals?

Explanation

To determine whether we can perform the charcoal cavity test without the addition of a fusion mixture (sodium carbonate and potassium carbonate) with the carbonate of metals, let's break down the process step by step.

### Step-by-Step Solution:

1. **Understanding the Charcoal Cavity Test**:
- The charcoal cavity test is a qualitative analysis method used to identify the presence of certain metals by heating their salts in a charcoal cavity.

2. **Role of the Fusion Mixture**:
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