Browse Questions

# To which class of dyes does phenolphthalein belong ?

$(a)\;azo \;dyes\qquad(b)\;triphenylmethane\;dyes\qquad(c)\;nitro\;dyes\qquad(d)\;phthalein\;dyes$

Explanation :
Phenolphthalein is a typical dye belonging to the class which contains in it a phthalein group as the functional group i .e . phthalein dyes .