Lead is mainly extracted by :

Options

A. Carbon reduction method
B. Self-reduction method
C. Electrolytic reduction
D. Leaching with aqueous solution of NaCN followed by reduction

Answer

To solve the question "Lead is mainly extracted by:", we can follow these steps:

### Step 1: Identify the extraction methods provided.
The options given for the extraction of lead are:
1. Carbon reduction method
2. Cell production method
3. Electrolytic reduction
4. Leaching with aqueous solution of NaCl followed by reduction

### Step 2: Understand the main ore of lead.
Lead is primarily found in the form of sulfide ores, such as galena (PbS). Understanding the ore is crucial for determining the extraction method.

### Step 3: Analyze the extraction methods.
- **Carbon Reduction Method**: This method is generally used for metals that are less reactive than carbon. While it can be used for some metals, it is not the primary method for lead extraction.

- **Cell Production Method**: This method, also known as self-reduction, is specifically used for extracting less electropositive metals like lead from their sulfide ores. In this method, the sulfide ore is heated in the presence of iron, converting part of the ore into oxide or sulfate, which then reacts with the remaining sulfide to produce lead and sulfur dioxide.

- **Electrolytic Reduction**: This method is typically used for very reactive metals, such as aluminum, and is not commonly used for lead extraction.

- **Leaching with Aqueous Solution of NaCl**: This method is not a standard extraction method for lead and is less efficient compared to the cell production method.

### Step 4: Determine the correct method.
Based on the analysis, the **Cell Production Method** is the most suitable and commonly used method for extracting lead from its sulfide ores.

### Conclusion:
Lead is mainly extracted by the **Cell Production Method**.

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