Fluorescin, a well known dye is obtained by the reaction of:

Phthalic anhydride and phenol

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Phthalic anhydride and resorcinol

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Succinic acid and resorcinol

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Phthalic anhydride and catechol

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Solution

The correct option is B Phthalic anhydride and resorcinol
Fluorescin is obtained by the reaction of phthalic anhydride and resorcinol.

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