A) \[Zn\]
B) \[Fe\]
C) \[Al\]
D) \[Cu\]
Correct Answer: D
Solution :
Brass is an alloy of\[Cu\]and\[Zn\]. Bronze is an alloy of\[Cu\]and\[Sn\]. German silver is an alloy of\[Cu,Zn\]and\[Ni\]. Hence,\[Cu\]is the common metal in brass, bronze and german silver.
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