MCQ
What is the conjugate base of $O{H^ - }$
- A${O_2}$
- B${H_2}O$
- C${O^ - }$
- ✓${O^{2 - }}$
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$I . C H_{3}^{+}$ $II.$ $H_{3} O ^{+}$ $III.$ $N H_{3}$ $I V\,\, C H_{3}^{-}$
(Round off to the Nearest integer) [Given : Atomic masses : $C =12.0 \,u , H : 1.0\, u,O : 16.0 \,u , Br =80.0 \,u ]$