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1. | (i) What is the similarity in the use of sulphur dioxide and chlorine as bleaching agents? | | | | |
2. | (ii) When chlorine is involved in bleaching, what is the type of chemical reaction that changes the coloured compound to a colourless one? | | | | |
3. | (iii) What is the reason for not using chlorine to bleach wool? | | | | |
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