why moist blue litmus paper is introduced in a jar of sulphur dioxide
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Moist blue litmus turns red and finally colourless as SO2 act as an acidic gas and then a bleaching agent. ... The pink colour of potassium permanganate paper turns colourless because of bleaching property of sulphur dioxide.
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Moist blue litmus turns red and finally colourless as SO2 act as an acidic gas and then a bleaching agent. ... The pink colour of potassium permanganate paper turns colourless because of bleaching property of sulphur dioxide.
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