Which reagent is used in qualitative testing for presence of sulfur dioxide?(a) Sodium Chloride(b) Iron (II) sulfate(c) Vanadium (V) oxide(d) Potassium permanganateThe question was posed to me during an online interview.I would like to ask this question from P-Block Elements in portion P-Block Elements of Chemistry – Class 12

Which reagent is used in qualitative testing for presence of sulfur di

1.	Which reagent is used in qualitative testing for presence of sulfur dioxide?(a) Sodium Chloride(b) Iron (II) sulfate(c) Vanadium (V) oxide(d) Potassium permanganateThe question was posed to me during an online interview.I would like to ask this question from P-Block Elements in portion P-Block Elements of Chemistry – Class 12
Answer» Right option is (d) Potassium permanganate Explanation: Acidified potassium permanganate is used to test the presence of SO2. A filter PAPER or COTTON wool dipped in acidified KMNO4 is held over the GAS, the former decolorizes, CONFIRMING the presence of gas.

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