A reaction in which a more active metal displaces a less active metal from the solution of its salt is called a ____ reaction.

Explanation

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

1. **Understanding the Reaction**: The question describes a chemical reaction where a more active metal displaces a less active metal from the solution of its salt.

2. **Identifying the Type of Reaction**: This type of reaction is known as a displacement reaction. In a displacement reaction, one element displaces another in a compound.

3. **Reactivity Series**: The basis for this reaction is the reactivity series of metals, which ranks metals according to their reactivity. Metals that are higher in the series can displace those that are lower.

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