A) 70% copper and 30% zinc
B) 90% copper and 10% tin
C) 85-92% copper and rest tin with little lead and nickel
D) 70-75% copper and rest tin
Correct Answer: A
Solution :
Cartridge brass contains 70 percent copper and 30 percent zinc. The proportions of zinc and copper can be varied to create a range of brasses with varying properties.
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