Textile Engineering > GATE 2022 > Dyeing
A cotton fabric is dyed at 5% shade (owf) using a monofunctional reactive dye. The molecular weight of the dye and cellobiose unit is 400 and 342, respectively. If all the hydroxyl groups in cellulose are accessible for reaction, the percentage of unreacted hydroxyl groups of cellulose remaining after dyeing (rounded off to 2 decimal places) is
Correct : 99.20 to 99.40
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