Question:
German silver is an alloy of:
German silver is an alloy of:
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Memory aids for alloys:
• German Silver = Cu + Zn + Ni (no Ag)
• Brass = Cu + Zn
• Bronze = Cu + Sn
• German Silver = Cu + Zn + Ni (no Ag)
• Brass = Cu + Zn
• Bronze = Cu + Sn
Updated On: Jun 12, 2026
- $\text{Cu, Zn}$
- $\text{Cu, Zn, Ni}$
- $\text{Ag, Zn, Ni}$
- $\text{Cu, Ni}$
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The Correct Option is B
Solution and Explanation
Concept:
This question requires knowledge of the chemical compositions of common non-ferrous alloys. An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal, designed to enhance specific properties such as strength, corrosion resistance, appearance, or electrical behavior.
Key characteristics used to evaluate the compositions include:
• Misconception matching: Many alloys are colloquially named after their physical appearance rather than their exact structural constituents. German silver is a classic example of this.
• Composition Profiles: Different ratios of transition elements yield completely distinct industrial alloys (e.g., Brass vs. Bronze vs. German Silver).
Step 1: Understanding the composition of German silver.
Despite containing the word "silver" in its name, German silver does not contain any elemental silver ($\text{Ag}$). It is named "German silver" because it was originally developed in Germany during the 19th century as a cost-effective substitute for precious sterling silver, mirroring its metallic luster, bright silvery-white color, and exceptional polish capacity. The standard chemical composition profile of German silver contains three primary elements:
• Copper ($\text{Cu}$): $\approx 50\% - 61\%$ (Acts as the base metal matrix)
• Zinc ($\text{Zn}$): $\approx 17\% - 19\%$ (Improves fluid castability and tensile properties)
• Nickel ($\text{Ni}$): $\approx 21\% - 30\%$ (Imparts the characteristic silvery-white appearance and excellent corrosion resistance) Because it is a homogeneous combination of Copper ($\text{Cu}$), Zinc ($\text{Zn}$), and Nickel ($\text{Ni}$), Option (2) is correct.
Step 2: Evaluating the alternative options.
Let us systematically break down the elemental combinations found in the other options:
• Option (1): $\text{Cu, Zn}$
This is Brass, a binary alloy of copper and zinc.
• Option (3): $\text{Ag, Zn, Ni}$
Incorrect because German silver contains no silver.
• Option (4): $\text{Cu, Ni}$
This is Cupronickel, used in coins and marine applications.
• Misconception matching: Many alloys are colloquially named after their physical appearance rather than their exact structural constituents. German silver is a classic example of this.
• Composition Profiles: Different ratios of transition elements yield completely distinct industrial alloys (e.g., Brass vs. Bronze vs. German Silver).
Step 1: Understanding the composition of German silver.
Despite containing the word "silver" in its name, German silver does not contain any elemental silver ($\text{Ag}$). It is named "German silver" because it was originally developed in Germany during the 19th century as a cost-effective substitute for precious sterling silver, mirroring its metallic luster, bright silvery-white color, and exceptional polish capacity. The standard chemical composition profile of German silver contains three primary elements:
• Copper ($\text{Cu}$): $\approx 50\% - 61\%$ (Acts as the base metal matrix)
• Zinc ($\text{Zn}$): $\approx 17\% - 19\%$ (Improves fluid castability and tensile properties)
• Nickel ($\text{Ni}$): $\approx 21\% - 30\%$ (Imparts the characteristic silvery-white appearance and excellent corrosion resistance) Because it is a homogeneous combination of Copper ($\text{Cu}$), Zinc ($\text{Zn}$), and Nickel ($\text{Ni}$), Option (2) is correct.
Step 2: Evaluating the alternative options.
Let us systematically break down the elemental combinations found in the other options:
• Option (1): $\text{Cu, Zn}$
This is Brass, a binary alloy of copper and zinc.
• Option (3): $\text{Ag, Zn, Ni}$
Incorrect because German silver contains no silver.
• Option (4): $\text{Cu, Ni}$
This is Cupronickel, used in coins and marine applications.
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