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Grade: 12th pass
        
Bleaching action of SO2  is:
A) permanent, reduction
B) temporary, reduction 
C) permanent, oxidation 
D) temporary, oxidation
10 months ago

Answers : (2)

Saurabh Koranglekar
askIITians Faculty
8383 Points
							Dear student

The answer is B) temporary, reduction

Regards
10 months ago
Vikas TU
11766 Points
							
Dear student 
Sulphur dioxide is a temporary bleaching agent, unlike Chlorine, which is a permanent bleaching agent! This is because the mechanism for bleaching is different:
SO2-Reduction => TEMPORARY
Cl2-Oxidation => PERMANENT
Sulphur dioxide removes oxygen from the coloured substance and makes it colourless. But atmospheric oxygen slowly takes place of the removed oxygen and because of which the material regains the colour.
10 months ago
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