The correct answer is: A. Copper, nickel and silver
German silver is an alloy of copper, nickel, and silver. It is a white, silvery-colored alloy that is often used in place of silver because it is less expensive. German silver is also known as nickel silver, white copper, or alpaca.
German silver is a hard, corrosion-resistant alloy that is often used in making coins, jewelry, and other decorative items. It is also used in making electrical contacts and other applications where resistance to corrosion is important.
German silver is typically made by melting together copper, nickel, and silver in a specific ratio. The proportions of the metals in the alloy can vary depending on the desired properties of the final product. For example, alloys with a higher percentage of nickel are more resistant to corrosion, while alloys with a higher percentage of silver are more ductile.
German silver is a versatile alloy that has many applications. It is a good choice for applications where resistance to corrosion is important, and it can also be used to create decorative items.
Here is a brief explanation of each option:
- Option A: Copper, nickel and silver. This is the correct answer. German silver is an alloy of copper, nickel, and silver.
- Option B: Silver, copper and aluminium. This is not the correct answer. German silver does not contain aluminium.
- Option C: Zinc, copper and nickel. This is not the correct answer. German silver does not contain zinc.
- Option D: Zinc, silver and copper. This is not the correct answer. German silver does not contain zinc.