How will you test whether a given rod is made of iron or copper?

Explanation

To determine whether a given rod is made of iron or copper, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Properties of Materials**:
- Iron is a ferromagnetic material, which means it can be magnetized and will respond to a magnetic field.
- Copper is a non-magnetic material, meaning it will not be magnetized and will not respond to a magnetic field.

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