Refining of silver is done by

Options

A. liquation
B. poling
C. cupellation
D. van arkel method

Answer

To determine the method used for the refining of silver, we can analyze the options provided and eliminate those that do not apply. Here’s a step-by-step solution:

### Step 1: Understand the Question
The question asks about the method used for refining silver. Refining is the process of purifying a metal from its ores or alloys.

### Step 2: Evaluate the Options
1. **Equation Method**: This is a metallurgical method for separating metals from ores or alloys. However, it does not specifically refer to the refining of silver. Therefore, this option is not correct.

2. **Polling**: This method is used for the purification of copper, particularly when copper oxide is present as an impurity. Since this method is specific to copper, it cannot be the correct answer for refining silver.

3. **Complication**: This is a refining process where ores or alloyed metals are treated at very high temperatures. It is specifically mentioned that this method is used for refining silver and gold from base metals like copper, zinc, and lead. This makes it a strong candidate for the correct answer.

4. **Wen arcal Method**: This method is used to refine zirconium and titanium metals. Since it does not pertain to silver, this option is also incorrect.

### Step 3: Conclusion
Based on the evaluation of the options, the correct method for refining silver is **Complication**.

### Final Answer
The refining of silver is done by **Complication**.

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