Question

What will be problem if desizng in not done before reactive dye?

Answer 1

Explanation:

Coloured substances used for colouring Textiles, Foodstuffs, Silk, Wool, etc., are called dyes. But all coloured substances are not Dyes. For a substance to act as a dye, it must fulfill the following requirements. It must have a suitable attractive colour, i.e., it should absorb light in the visible Region.