Impure zinc, as collected from earthen clay retort, is called

Options

A. Blister zinc
B. Pig Zinc
C. Zinc spelter
D. Cast zinc

Answer

To solve the question regarding the term used for impure zinc collected from an earthen clay retort, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the name of impure zinc that is collected from an earthen clay retort.

2. **Identify the Process**: The process of collecting impure zinc from an earthen clay retort is known as "spelter."

3. **Recognize Impurities**: Impure zinc, or spelter, typically contains impurities such as cadmium, lead, and iron.

4. **Evaluate the Options**: We need to analyze the provided options:
- **Option 1: Blister Zinc** - This is not the correct term for impure zinc from a retort.
- **Option 2: Pig Zinc** - This term is also incorrect in this context.
- **Option 3: Zinc Spelter** - This is the correct term for impure zinc collected from the retort.
- **Option 4: Cast Zinc** - This does not refer to the impure zinc from the retort.

5. **Select the Correct Answer**: Based on the analysis, the correct answer is **Zinc Spelter**.

### Final Answer:
The impure zinc collected from an earthen clay retort is called **Zinc Spelter**.

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