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Name the gas that can readily decolourise acidified KMnO4 solution. (a) SO2

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Name the gas that can readily decolourise acidified KMnO4 solution.

(a) SO2 

(b) NO2

(c) P2O5

(d) CO2

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1 Answer

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Best answer

Correct option (a) SO2 

Explanation :

SO2 readily decolourises pink violet colour of acidified KMnO4 solution.

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