The extraction of metals from their ores by electrolysis is called :

Options

A. electroplating
B. electrometallurgy
C. electrorefining
D. none of these

Answer

To answer the question, "The extraction of metals from their ores by electrolysis is called:", we can follow these steps:

### Step 1: Understand the Terms
We need to clarify the terms provided in the options:
- **Electroplating**: This is a process where a layer of metal is deposited onto a surface using electrolysis, primarily for decorative or protective purposes.
- **Electrorefining**: This is a process used to purify metals by using electrolysis, but it does not involve the extraction of metals from ores.
- **Electrometallurgy**: This is the process that involves the extraction of metals from their ores using electrolysis.

### Step 2: Analyze the Question
The question specifically asks about the extraction of metals from their ores using electrolysis. Therefore, we need to identify which term corresponds to this process.

### Step 3: Identify the Correct Answer
From our understanding:
- **Electrometallurgy** is the correct term for the extraction of metals from their ores using electrolysis.

### Conclusion
The extraction of metals from their ores by electrolysis is called **Electrometallurgy**.

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