MCQ
Schiff's reagent gives pink colour with
- ✓Aldehydes
- BEthers
- CKetones
- DCarboxylic acid
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Product $(A)$ is

Reason : $[Fe(CN)_6]^{3-}$ has $+3$ oxidation state while $[Fe(CN)_6]^{4-}$ has $+2$ oxidation state.