MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp -Block Elements (group 15-18)Previous Year Questions

Name the gas that can readily decolourise acidified KMnO4 solution. (NEET 2017)

A.CO2

B.SO2✓ Correct

C.NO2

D.P2O5

Explanation

SO2 gas can readily oxidise acidified KMnO4 solution because KMnO4 is an oxidising agent that easily oxidises SO2. 2 2 4 2 2 4 2MnO 5SO 2H O 2Mn 5SO 4H ->

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