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JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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Which is not an ore of copper?
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Correct option: A
Cu(NO3)2\mathrm{Cu}\left(\mathrm{NO}_3\right)_2
Option A (Cu(NO3)2\mathrm{Cu(NO_3)_2}) is correct because copper nitrate is highly soluble in water, making it unsuitable as a stable ore, whereas the other options are common copper ores.

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