MCQ
$H_2S$ gas is not evolved when $SO_3^{2-}$ ion reacts with following reagents.
- A$Zn +$ dil. $H_2SO_4$
- B$Al +$ Conc. $NaOH$
- ✓$Al +$ dil. $HCl$
- DNone of these
✓
Answer
Correct option: C.
$Al +$ dil. $HCl$
c
Statement-$I$: Oxygen can have oxidation state from $-2$ to $+2$ , so statement $I$ is incorrect
Statement-$I$: Oxygen can have oxidation state from $-2$ to $+2$ , so statement $I$ is incorrect
Statement- $II$: On moving down the group stability of $+4$ oxidation state increases whereas stability of $+6$ oxidation state decreases down the group, according to inert pair effect.
So both statements are wrong.
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