The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are calledA. Vat dyesB. Disperse dyesC. Triphenyl methane dyeD. Azo dyes

The dyes which are applied to the fabric in the colourless reduced sta

1.	The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are calledA. Vat dyesB. Disperse dyesC. Triphenyl methane dyeD. Azo dyes
Answer» Correct Answer - A Vat dyes are insoluble compounds which on reduction give soluble (leucoform) product. The product may be either coloured or colourless and have affinity for specific fabrics e.g. Indigo.

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The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are calledA. Vat dyesB. Disperse dyesC. Triphenyl methane dyeD. Azo dyes

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