Question:
The alloy that contains copper and Zn is $x$ and the one that contains copper and Ni is $y$. What are $x$ and $y$ respectively?
The alloy that contains copper and Zn is $x$ and the one that contains copper and Ni is $y$. What are $x$ and $y$ respectively?
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Remember common alloy compositions: Brass (Cu + Zn), Bronze (Cu + Sn), and Cupronickel (Cu + Ni), which is used in coins like the UK silver coin.
Updated On: Jan 5, 2026
- Brass, Bronze
- Bronze, 'Silver' UK coin
- German silver, Bronze
- Brass, 'Silver' UK coin
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The Correct Option is D
Solution and Explanation
Step 1: Identify the alloy with Cu and Zn
Brass is an alloy of Copper (Cu) and Zinc (Zn), so $x = \text{Brass}$. Step 2: Identify the alloy with Cu and Ni
The alloy commonly known as "UK silver coin" or "cupronickel" consists of Copper (Cu) and Nickel (Ni), so $y = \text{'Silver' UK coin}$. Therefore, $x =$ Brass and $y =$ 'Silver' UK coin.
Brass is an alloy of Copper (Cu) and Zinc (Zn), so $x = \text{Brass}$. Step 2: Identify the alloy with Cu and Ni
The alloy commonly known as "UK silver coin" or "cupronickel" consists of Copper (Cu) and Nickel (Ni), so $y = \text{'Silver' UK coin}$. Therefore, $x =$ Brass and $y =$ 'Silver' UK coin.
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