Question

Which of the following is an example of basic dye

• A. Alizarin
• B. Malachite green
• C. Indigo
• D. Orange I

Answer 1

Answer: (B)

Malachite green

Answer 2

Basic dyes contain $NH_{2}$ or $- NR_{2}$ groups as colour bearing group or colour enhancing groups they are generally used for Wool, cotton, leather, paper, polyester, nylon etc. e.g. aniline yellow, crysodine G, butter yellow, malachite green etc.