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Q.

Transition metals form acidic, basic and amphoteric oxides. Which one of the following is a basic oxide

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a

${Mn}_{2} O_{7}$

b

$V_{2} O_{3}$

c

${CrO}_{3}$

d

${Cr}_{2} O_{3}$

answer is C.

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Detailed Solution

${Cr}_{2} O_{3}$ ……… amphoteric;

${Mn}_{2} O_{7}, {CrO}_{3}$ ……… acidic;

$V_{2} O_{3} . . .$ basic;

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Transition metals form acidic, basic and amphoteric oxides. Which one of the following is a basic oxide