A) \[Cu\text{ (}80%\text{)},\text{ }Zn\text{ (}20%\text{)}\]
B) \[~Cu\text{ (}60%\text{)},\text{ }Ni\text{ (}40%\text{)}\] .
C) \[~Cu\text{ (}90%\text{)},\text{ }Sn\text{ (}10%\text{)}\]
D) \[Cu\text{ (}80%\text{)},\text{ }Sn\text{ (}20%\text{)}\]
Correct Answer: D
Solution :
Bell-metal is an alloy of copper (80%) and tin (20%) and is used for making bells and gongs etc.
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