MCQ
Carbon is present in highest oxidation number in $......$
- ✓$CO _3^{2-}$
- B$CaC_2$
- C$C _2 O _4^{2-}$
- D$CO$
✓
Answer
Correct option: A.
$CO _3^{2-}$
$CO _3^{2-}$
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