Pick out the incorrect statement for S O 2 .

Question

Pick out the incorrect statement for S O 2 ., It turns filter paper moistened with acidified K 2 C r 2 O 7 solution green, It turns starch iodate paper blue, It does not react with chlorine in presence of charcoal, It decolourieses acidified K M n O 4 solution

MARKS App · Accepted Answer

It react with C l 2 in presence of charcoal (acting as a catalyst). S O 2 + C l 2 → C h a r c o a l S O 2 C l 2 A. K 2 C r 2 O 7 + 3 S O 2 + H 2 S O 4 → C r 2 ( S O 4 ) 3 ( G r e e n ) + K 2 S O 4 + H 2 O B. 2 K I O 3 + 5 S O 2 + 4 H 2 O → I 2 + 2 K H S O 4 + 3 H 2 S O 4 I 2 so formed reacts with starch to form a complex of blue colour. D. 2 K M n O 4 + 5 S O 2 + 2 H 2 O → K 2 S O 4 + 2 M n S O 4 ( C o l o u r l e s s ) + 2 H 2 S O 4

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