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Q.
Pick out the incorrect statement for $SO_{2}$ .
NTA AbhyasNTA Abhyas 2020The p-Block Elements - Part2
Solution:
It react with $Cl_{2}$ in presence of charcoal (acting as a catalyst).
$SO_{2}+Cl_{2}\overset{C h a r c o a l}{ \rightarrow }SO_{2}Cl_{2}$
$K _{2} Cr _{2} O _{7}+3 SO _{2}+ H _{2} SO _{4} \rightarrow \underset{(\text { Green })}{ Cr _{2}\left( SO _{4}\right)_{3}}+ K _{2} SO _{4}+ H _{2} O$
B. $2KIO_{3}+5SO_{2}+4H_{2}O \rightarrow I_{2}+2KHSO_{4}+3H_{2}SO_{4}$
$I_{2}$ so formed reacts with starch to form a complex of blue colour.
D. $2KMnO_{4}+5SO_{2}+2H_{2}O \rightarrow K_{2}SO_{4}+\underset{\left(\right. C o l o u r l e s s \left.\right)}{2 M n S O_{4}}+2H_{2}SO_{4}$