A) \[Cu,\,Zn\] and \[Sn\]
B) \[Cu,\,Zn\] and \[Ni\]
C) \[Cu\] and \[Zn\]
D) \[Cu\] and \[Sn\]
Correct Answer: D
Solution :
\[\underset{80%}{\mathop{Cu}}\,+\underset{20%}{\mathop{Sn}}\,\to \text{Bell metal}\]
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