MCQ
pH किस आयन का ॠणात्मक लघुगणक होता है-
- A$\left[\mathrm{H}_{2} \mathrm{O}\right]$
- B$\left[\mathrm{OH}^{-}\right]$
- C$\left[\mathrm{H}^{+}\right]$
- D$\left[\mathrm{Na}^{+}\right]$
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