Extraction of `Ag` from commercial lead is possible by

Options

A. Parke's process
B. Clarke's process
C. Pattinson's process
D. Electrolytic process

Explanation

To solve the question regarding the extraction of silver (Ag) from commercial lead, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Process**: The extraction of silver from commercial lead is possible through a method known as the Parkes process.

2. **Understand the Composition**: The commercial lead from which silver is extracted is often Argentiferrous lead, which typically contains lead sulfide (PbS) along with a small percentage of silver (0.01% to 1%).

3. **Principle of the Process**: The Parkes process is based on the principle of distribution. This principle states that when two immiscible liquids are present, one solute will preferentially dissolve in one of the liquids.

4. **Two-Phase System**: In the Parkes process, a two-phase system is created using molten zinc and molten lead.

5. **Solubility of Silver**: Silver has a higher solubility in molten zinc compared to molten lead. This means that when the two phases are mixed, silver will preferentially dissolve in the molten zinc phase.

6. **Separation of Phases**: After the silver has dissolved in the molten zinc, the two phases can be separated. The lead, which is less soluble in zinc, will remain in the molten lead phase, while the silver will be in the molten zinc phase.

7. **Recovery of Silver**: Finally, the zinc containing the dissolved silver is cooled and treated to recover the silver, typically through processes such as distillation or electrolysis.

### Final Answer:
The extraction of silver (Ag) from commercial lead is possible by the Parkes process.

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