Multiple choice Alizarin belongs to the class of magneta dyes Leuco dyes Mordant anthraquinoides dyes Acidic athraquinoides dyes Both 1 and 2 Reveal answer Fill a bubble to check yourself C Correct answer Explanation This option is correct. Alizarin belongs to the class of mordant anthraquinone dyes.This is present in the roots of the maddar plant. It is synthesised from phthalic anhydride.