when so2 is passed through pot.iodate solution,the oxidation no. of iodine changes from a. +5 to 0 b.+5 to -1 c.-5 to 0 d.+7 to -1
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KIO3+SO2~~>>k2so4 +I2 +2O2
o. s of I2 is changed from +5 to 0
a is ans
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