………… involves reduction of metal oxide with coke or carbon monoxide.

Answer

To solve the question, we need to identify the process that involves the reduction of metal oxides using coke or carbon monoxide. Here's the step-by-step solution:

### Step 1: Understand the Terms
- **Metal Oxide**: This is a compound formed by the reaction of a metal with oxygen.
- **Reduction**: This is a chemical reaction that involves the gain of electrons or the removal of oxygen from a compound.

### Step 2: Identify the Reducing Agents
- **Coke**: This is a form of carbon that is used as a reducing agent in metallurgical processes.
- **Carbon Monoxide (CO)**: This is also a reducing agent that can reduce metal oxides to metals.

### Step 3: Recognize the Process
- The process of reducing metal oxides using coke or carbon monoxide is known as **smelting**.

### Step 4: Conclude the Answer
- Therefore, the answer to the question is: **Smelting involves the reduction of metal oxides with coke or carbon monoxide.**

### Final Answer
Smelting

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