Which of the following metals can displace hydro-gen from dilute acids?

Options

A. Zinc
B. Gold
C. Copper
D. Silver

Explanation

To determine which of the following metals can displace hydrogen from dilute acids, we need to refer to the reactivity series of metals. The reactivity series ranks metals based on their ability to displace other metals from solutions and their reactivity with acids.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which metals can displace hydrogen from dilute acids. The metals given are Zinc, Gold, Copper, and Silver.

2. **Recall the Reactivity Series**: The reactivity series is a list of metals arranged in order of decreasing reactivity. Metals that are higher in the series can displace metals that are lower in the series from their compounds. Hydrogen is included in this series.

3. **Identify the Position of Each Metal**:
- **Zinc (Zn)**: Zinc is above hydrogen in the reactivity series.
- **Gold (Au)**: Gold is below hydrogen in the reactivity series.
- **Copper (Cu)**: Copper is also below hydrogen in the reactivity series.
- **Silver (Ag)**: Silver is below hydrogen in the reactivity series.

4. **Determine Displacement Ability**:
- Since Zinc is above hydrogen, it can displace hydrogen from dilute acids.
- Gold, Copper, and Silver cannot displace hydrogen because they are below hydrogen in the reactivity series.

5. **Conclusion**: The only metal from the options provided that can displace hydrogen from dilute acids is Zinc.

### Final Answer:
**Zinc (Option A)** can displace hydrogen from dilute acids.

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