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DUMET Medical DUMET Medical Solved Paper-2004

  • question_answer
    The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called :

    A)  vat dyes

    B)  disperse dyes

    C)  triphenyl methane dye

    D)  azo dyes

    Correct Answer: A

    Solution :

    (i) Vat dyes: They are applied to fabric in the colourless reduced state and then oxidised to coloured state. (ii) Desperse dyes: These are wafer insoluble dyes which are applied to fabric in the form of a dispersion of the family divided dye in solution and along with stablizer.


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