The alloy containing highest percentage composition of copper is

Options

A. German silver
B. Aluminium Bronze
C. Bell metal
D. Brass

Answer

To determine which alloy contains the highest percentage composition of copper, we will analyze the composition of each option provided.

### Step-by-Step Solution:

1. **Identify the Alloys and Their Compositions:**
- **German Silver:**
- Copper: 50%
- Zinc: 19%
- Nickel: 30%
- **Aluminum Bronze:**
- Copper: 80% (approximate, as the range is given)
- Aluminum: 9-14%
- Iron: 4%
- Nickel: 5%
- **Bell Metal:**
- Copper: 80%
- Tin: 20%
- **Brass:**
- Copper: 60%
- Zinc: 40%

2. **Compare the Percentage of Copper in Each Alloy:**
- German Silver: 50%
- Aluminum Bronze: 80%
- Bell Metal: 80%
- Brass: 60%

3. **Determine the Highest Percentage:**
- Both Aluminum Bronze and Bell Metal have the highest percentage of copper at 80%. However, since the question asks for the alloy with the highest percentage composition of copper, we can conclude that both Aluminum Bronze and Bell Metal are contenders.

4. **Final Conclusion:**
- Since the question specifies "the alloy containing the highest percentage composition of copper," we can state that Bell Metal is a correct answer because it is a well-defined alloy with a clear composition of 80% copper and 20% tin.

### Final Answer:
The alloy containing the highest percentage composition of copper is **Bell Metal**.

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