Which of the following metal is extracted from the process of hydrometallurgy? \( \mathrm{P} \) ...

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Which of the following metal is extracted from the process of hydrometallurgy?
\( \mathrm{P} \)
(1) \( \mathrm{Sn} \)
(2) \( \mathrm{Mg} \)
W
(3) \( \mathrm{Zn} \)
(4) \( \mathrm{Cu} \)
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