Electroplating prevents :

Options

A. Current
B. Chemical effect
C. Rusting
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Electroplating**:
- Electroplating is a process where a layer of metal is deposited onto a surface using electric current. This is done to enhance the appearance, prevent corrosion, and improve the durability of the object being coated.

2. **Purpose of Electroplating**:
- The primary purpose of electroplating is to prevent rusting and corrosion of metals. By coating a metal object with a layer of another metal (like gold, silver, or chromium), it creates a barrier that protects the underlying material from environmental factors that can cause rust.

3. **Chemical Effects of Electric Current**:
- The process of electroplating is based on the chemical effects of electric current. When electric current passes through an electrolyte solution, it causes the metal ions to migrate and deposit onto the surface of the object being plated.

4. **Conclusion**:
- Therefore, electroplating mainly prevents rusting and corrosion of metals. It does not prevent current or the chemical effects of electric current; instead, it utilizes these effects to achieve the desired coating.

5. **Final Answer**:
- Electroplating prevents rusting.