What is the role of graphite rod in the electrometallurgy of aluminium?

Explanation

### Step-by-Step Solution

1. **Understanding the Electrolysis Process**:
- In the electrometallurgy of aluminum, the process involves the electrolysis of alumina (Al₂O₃) to extract aluminum metal.

2. **Identifying the Electrolytic Cell Components**:
- The electrolytic cell consists of two electrodes: the anode and the cathode.
- The anode is typically made of a graphite rod, while the cathode is often a graphite-lined iron structure.
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