[MP PMT 1990; CPMT 1997]
A) $ Cu $ and $ Al $
B) $ Cu,,Sn $ and $ Zn $
C) $ Cu,,Zn $ and $ Ni $
D) $ Cu $ and $ Sn $
Correct Answer: B
Cu = 88%, Sn = 10%, Zn = 2%, Pb = 0.5% $\rightarrow$ Gun Metal
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