A) \[Al\,\,94%,\,\,Mg\,6%\]
B) \[Cu56%,Zn24%,Ni\text{ }20%\]
C) \[Cu\,\,95%,Al\,\,5%\]
D) \[Al\text{ }95%,\text{ }Cu\text{ }4%,\text{ }Mn\text{ }0.5%,\text{ }Mg\text{ }0.5%\]
Correct Answer: D
Solution :
Duralumin is an alloy of \[Al(95%),\] \[Cu\text{ }\left( 4% \right),\text{ }Mn(0.5%)\]and \[Mg(0.5%).\]Magnalium is the alloy of \[Al(94%)\]and \[Mg(6%)\]. German silver is an alloy of \[Cu,(56%)\], \[Zn(24%)\]and \[Ni(20%)\]. Aluminium bronze is an alloy of \[Cu(95%)\] and \[Al(5%)\].
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