Name the metal which is commonly used as a reducing agent is metallurgical operations.

Explanation

To answer the question, "Name the metal which is commonly used as a reducing agent in metallurgical operations," we can follow these steps:

### Step 1: Identify the reducing agent
The metal commonly used as a reducing agent in metallurgical operations is **aluminium**.

### Step 2: Understand why aluminium is used
Aluminium is used as a reducing agent because when it oxidizes, it releases a significant amount of energy. This energy is sufficient to reduce various metallic oxides to their corresponding metals.

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