A reddish brown colored metal used in electrical wires when powdered and heaed storngly in a opened china dish its colour turns black. wen hydrogen gas is passed over this black substance its it regains its original color.name the metal and the black coloured substance formed??
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The given metal is Copper (Cu).
The black colored substance is copper oxide, which is formed after the reaction of copper with oxygen.
The black colored substance is copper oxide, which is formed after the reaction of copper with oxygen.
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