Among K , Mg , Au and Cu , the one which is extracted by heating its ore in air is

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Among $\mathrm{K}, \mathrm{Mg}, \mathrm{Au}$ and $\mathrm{Cu}$, the one which is extracted by heating its ore in air is

ChemistryGeneral Principles and Processes of Isolation of MetalsKVPYKVPY 2017 (5 Nov SA)

Options:

A $\mathrm{K}$
B $\mathrm{Mg}$
C $\mathrm{Au}$
D $\mathrm{Cu}$

Solution:

1579 Upvotes Verified Answer

The correct answer is: $\mathrm{Cu}$

Theoritical question.

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