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Question

SO2 gas is used as a bleaching agent. Its bleaching action is_______.

A
temporary and due to its oxidizing nature
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B
temporary and due to its reducing action
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C
permanent and due to its oxidizing action
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D
permanent and due to its reducing action
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Solution

The correct option is B temporary and due to its reducing action
SO2 gas is used as a bleaching agent. Its bleaching action is temporary due to its reducing action. Here S oxidises to higher oxidation state and it reduces other compound.

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