Analytical ChemistryMedium
Question
Fluoresce in is an example of
Options
A.azo dyes
B.phthalein dyes
C.triphenylmethane dyes
D.nitro dyes
Solution
Fluorescein also called resorcinol-phthalein is an example of phthalein dye. It is prepared by heating phthalic anhydric and resorcinol over a zinc catalyst, and it crystallizes as a deep red powered.
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