A metal occurs in nature as its ore X which on heating in air convert to Y. Y reacts with unreacted X to give the metal. The metal is:

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Solution

The correct option is B Cu
A metal occurs in nature as its ore $C u_{2} S$ which is heating in air convert to $C u_{2} O$ , $C u_{2} O$ reacts with unreacted $C u_{2} S$ to give the metal. The metal is $C u$ .
$2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}$
$2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}$

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A metal occurs in nature as its ore X which on heating in air convert to Y. Y reacts with unreacted X to give the metal. The metal is:

The correct option is B CuA metal occurs in nature as its ore Cu2S which is heating in air convert to Cu2O, Cu2O reacts with unreacted Cu2S to give the metal. The metal is Cu.2Cu2S+3O2→2Cu2O+2SO22Cu2O+Cu2S→6Cu+SO2