What happens when a piece of copper wire is dropped in iron sulphate solution?

Explanation

**Step-by-Step Solution:**

1. **Identify the substances involved**: We have a piece of copper wire and iron sulfate solution (FeSO4).

2. **Understand the reactivity series**: The reactivity series is a list of metals arranged in order of decreasing reactivity. In this series, iron (Fe) is more reactive than copper (Cu).

3. **Analyze the reaction potential**: When a metal is placed in a solution of a salt of another metal, a reaction may occur if the first metal is more reactive than the metal in the salt. In this case, since copper is less reactive than iron, it cannot displace iron from its sulfate solution.

...