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Which of the following dyes get attached to the fibre loy an irreversible chemical reaction?

$(a)\;\text{Vat dyes} \\ (b)\;\text{Fibre reactive dyes} \\(c)\;\text{Mordant dyes} \\ (d)\;\text{Direct dyes} $
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Fibre reactive dye get attached to the fibre ley an irreversible chemical reaction.
Actually , there is a substitution of certain groups present in the dyes of hydnoxyl or amino group indifferent fibres like cotton, wool, silk etc.
Hence b is the correct answers.
answered Mar 10, 2014 by meena.p
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