_______is used in the galavnization of iron and in making of dry cells which is used in electrical appliances.

Options

A. Sodium
B. Tin
C. Silver
D. Zinc

Answer

To solve the question, we need to identify the substance that is used in the galvanization of iron and in the making of dry cells.

### Step-by-Step Solution:

1. **Understanding Galvanization**:
- Galvanization is a process where a protective layer of zinc is applied to iron or steel to prevent corrosion. This is crucial because iron is prone to rusting when exposed to moisture and oxygen.

2. **Identifying the Use in Dry Cells**:
- Dry cells, commonly used in batteries for electrical appliances, also utilize zinc as one of their components. Zinc serves as the anode in many types of dry cells, facilitating the electrochemical reactions needed to generate electricity.

3. **Combining the Information**:
- Since zinc is used both in the galvanization process to protect iron from corrosion and as a key component in dry cells, we can conclude that the answer to the question is zinc.

4. **Final Answer**:
- Therefore, the answer to the question is **Zinc**.