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  4. Among the oxides, Mn2O7(I),V2O3(II), V2O5(III),CrO(IV) and Cr2O3(V), the basic oxides are

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Q. Among the oxides, $ M{{n}_{2}}{{O}_{7}}(I),{{V}_{2}}{{O}_{3}}(II), $ $ {{V}_{2}}{{O}_{5}}(III),CrO(IV) $ and $ C{{r}_{2}}{{O}_{3}}(V), $ the basic oxides are

MGIMS WardhaMGIMS Wardha 2014

Solution:

The oxides of metals in their lower oxidation states are basic, e.g, $ {{V}_{2}}{{O}_{3}} $ and $ CrO $ .