Upon heating with $C u_{2} S,$ the reagent(s) that give copper metal is/are
(IIT-JEE, Advanced 2014)

C u F e S_{2}

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C u O

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C u_{2} O

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C u S O_{4}

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Solution

The correct option is C $C u_{2} O$
$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$

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