A) nascent hydrogen responsible for bleaching is produced only in presence of moisture
B) water is the actual reducing agent responsible for bleaching
C) water is stronger acid than \[S{{O}_{2}}\]
D) the \[O{{H}^{-}}\]ions produced by water cause bleaching.
Correct Answer: A
Solution :
Nascent hydrogen is produced only in presence of moisture and is responsible for bleaching. \[S{{O}_{2}}+2{{H}_{2}}O\to {{H}_{2}}S{{O}_{4}}+2\left[ H \right]\] Coloured flower + [H] \[\to \]Colourless flower
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