When copper powder is heated it gets coated with :

black copper oxide

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yellow copper oxide

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red copper oxide

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None of these

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Solution

The correct option is A black copper oxide
Cu gets oxidized to CuO which is black in colour.
$2 C u + O_{2} \to 2 C u O$

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When copper powder is heated it gets coated with :

The correct option is A black copper oxideCu gets oxidized to CuO which is black in colour.2Cu+O2→2CuO

The correct option is A black copper oxide
Cu gets oxidized to CuO which is black in colour.
$2 C u + O_{2} \to 2 C u O$