NEET Chemistry Chemistry in Everyday Life Questions Solved


Which of the following is an example of basic dye ?
(a) Alizarin
(b) Malachite green
(c) Indigo
(d) Orange I

(b)

Basic dyes contain NH2 or -NR2 group as colour bearing groups or colour enhancing groups. They are generally used for wool, cotton, leather, paper, polyester, nylon, etc., e.g. aniline yellow, chrysoidine G, Butter yellow, malachite green, etc.

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