MCQ
Which of the following is most electronegative
- ✓$O$
- B$S$
- C$Te$
- D$Se$
| Element - | $O$ | $S$ | $Sc$ | $Te$ | $Po$ |
| Electo negativity - | $3.5$ | $2.5$ | $2.4$ | $2.1$ | $2.0$ |
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$6 OH ^{-}+ Cl ^{-} \rightarrow ClO _{3}^{-}+3 H _{2} O +6 e ^{-}$
If only $60 \%$ of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce $10\, g$ of $KCIO _{3}$ using a current of $2\, A$ is..........
(Given : $F =96,500\, C\, mol ^{-1}$ molar mass of $\left. KClO _{3}=122\,gmol ^{-1}\right)$