Bleaching action of SO₂ is due to
(a) reduction (b) oxidation
(c) hydrolysis (d) its acidic nature
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Answer:
Bleaching action of SO² is due to reduction
Answered by
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(a) reduction
Explanation:
Bleaching by sulphur dioxide is due to the process of reduction in the presence of moisture. The nascent hydrogen liberated in the reaction is responsible for the bleaching action. The surface gets reduced and becomes colourless. But when atmospheric oxygen comes into contact with the surface, it will get oxidized and become colored again.
Option A is the answer.
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