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Which of the following alloys of copper does not contain zinc ?

$\begin {array} {1 1} (A)\;\text{Brass} & \quad (B)\;\text{Bronze} \\ (C)\;\text{Gun metal} & \quad (D)\;\text{Phosphor bronze} \end {array}$

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A)
Answer : Phosphor bronze
The composition of phosphor bronze is $\text{Cu}$ (95%), $\text{Sn}$ (4.8%) and $\text{P}$ (0.2%)
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