What is the conjugate base of $\mathrm{OH}^{-} ?$

What is the conjugate base of $\mathrm{OH}^{-} ?$
  1. $\mathrm{O}_2$
  2. $\mathrm{H}_2 \mathrm{O}$
  3. $\mathrm{O}^{-}$
  4. $\mathrm{O}^{-2}$

Solution

$\mathrm{OH}^{-} \longrightarrow \mathrm{O}^{-2}+\mathrm{H}^{+}$

Asked in: JEE Main 2005

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