Among the oxides, \( \mathrm{Mn}_{2} \mathrm{O}_{7} \) (I), \( \mathrm{V}_{2} \mathrm{O}_{3} \) ...

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Among the oxides, \( \mathrm{Mn}_{2} \mathrm{O}_{7} \) (I), \( \mathrm{V}_{2} \mathrm{O}_{3} \) (II), \( \mathrm{V}_{2} \mathrm{O}_{5} \) (III), \( \mathrm{CrO} \) (IV) and \( \mathrm{Cr}_{2} \mathrm{O}_{3} \) (V), the basic oxides are :
[Kerala (PMT) 2010]
\( P \)
(a) I and II
(b) II and III
(c) III and IV.
(d) II and IV
W.
(e) III and V
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