Fill in the blanks from the choices given in brackets:
A salt prepared by displacement reaction with copper is ………….. (ferrous chloride, silver chloride)

Explanation

To solve the question, we need to determine which salt can be prepared by a displacement reaction involving copper. Let's break it down step by step.

### Step 1: Understand Displacement Reactions
Displacement reactions occur when a more reactive metal displaces a less reactive metal from its compound. The general form of a displacement reaction can be represented as:
\[ \text{A} + \text{BC} \rightarrow \text{AC} + \text{B} \]
Here, metal A displaces metal B from its compound BC.

### Step 2: Identify the Reactivity Series
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