MCQ
$Cr _2 O _7{ }^{2-}$ forms in alkaline medium :
- A$CrO _3$
- ✓$CrO _4{ }^{2-}$
- C$CrO _2$
- Dall of these
✓
Answer
Correct option: B.
$CrO _4{ }^{2-}$
b
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