Spelter is

Options

A. Impure zinc
B. Impure iron
C. Pure zinc
D. Impure aluminium

Answer

**Step-by-Step Text Solution:**

1. **Definition of Spelter**: Spelter is a term used to refer to zinc, specifically in its impure form.

2. **Form of Spelter**: It is typically found in the form of slabs. These slabs are cast from the liquid zinc obtained during the reduction process of zinc ore.

3. **Source of Spelter**: The production of spelter involves the reduction of zinc ores, which can include ores such as sphalerite (ZnS).

4. **Commercial Use**: Spelter is the most common commercial form of zinc and is widely used in various applications due to its properties.

5. **Impurity Aspect**: It is important to note that spelter is not pure zinc; it contains impurities that may arise from the ore or the reduction process.

**Final Answer**: Spelter is impure zinc, typically found in slab form and produced from the reduction of zinc ores.

---