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Q.

SO2  gas is used as a bleaching agent. Its bleaching action is due to 

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a

Permanent and due to its reducing nature

b

Permanent and due to its oxidising nature

c

Temporary and due to its reducing nature

d

Temporary and due to its oxidising nature

answer is B.

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Detailed Solution

SO2+2H2O→  H2SO4+2(H)

SO2 gas is used as a bleaching agent. Its bleaching action is temporary due to its reducing action.

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