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Name the gas that can readily decolourise acidified KMnO_4 solution:

Option: 1

CO2


Option: 2

SO2


Option: 3

NO2


Option: 4

P2O5


Answers (1)

best_answer

SO2 easily gets oxidized in acidified KMnO4 solution to sulphate ions. 

in case of, CO2, NO2 and P2O5 C,n and P are in maximum oxidation states.

The correct answer is option 2.

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