SO_2acts as a bleaching agent. How? – InterviewSolution

1.	SO_2acts as a bleaching agent. How?
Answer» Solution :In the PRESENCE of moisture, `SO_2` gives nascent hydrogen which REDUCES the colouring MATTER to a colourless compound. `SO_2 + 2H_2 O RARR H_2SO_4 + 2H` Vegetable colouring matter ` +H rarr ` Colouless matter

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