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JEE MAIN 2021
25-07-21 S1
Question
The correct order of following 3d metal oxides, according to their oxidation numbers is :
(a) $\mathrm{CrO}_3$ (b) $\mathrm{Fe}_2 \mathrm{O}_3$ (c) $\mathrm{MnO}_2$ (d) $\mathrm{V}_2 \mathrm{O}_5$ (e) $\mathrm{Cu}_2 \mathrm{O}$
Select the correct option:
A
(d) > (a) > (b) > (c) > (e)
B
(a) > (c) > (d) > (b) > (e)
C
(a) > (d) > (c) > (b) > (e)
D
(c) > (a) > (d) > (e) > (b)
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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