MCQ
$C _6 H _5 CH _2 OH$ and $C _6 H _5- O - CH _3$ are :
- AMetamers
- BPosition isomers
- ✓Functional group isomers
- DTautomers
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${{O}_{(g)}}+{{e}^{-}}=O_{(g)}^{-}\Delta {{H}^{o}}=-142\ kJ\,mo{{l}^{-1}}$
$O_{(g)}^{-}+{{e}^{-}}=O_{(g)}^{2-}\Delta {{H}^{o}}=844\ kJ\,mo{{l}^{-1}}$
