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JEE CHEMISTRY MCQ: PRACTICAL CHEMISTRY

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The aqueous solution of which salt is coloured
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Correct option: C
Co(NO3)2\mathrm{Co}\left(\mathrm{NO}_3\right)_2
Option C (Co(NO3)2\mathrm{Co(NO_3)_2}) is correct because Co2+\mathrm{Co^{2+}} has allowed d-d transitions, resulting in a colored aqueous solution.

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