MHT CET 2024 Chemistry question

Which of the following is a pair of dihydric phenols?

(A)Resorcinol and pyrogallol
(B)Quinol and phloroglucinol
(C)Phloroglucinol and pyrogallol
(D)Catechol and QuinolCorrect

Answer: (D)

Solution

Dihydric phenols have two phenolic groups: catechol (1,2-dihydroxybenzene), resorcinol (1,3-) and quinol/hydroquinone (1,4-). Trihydric phenols have three groups: pyrogallol (1,2,3-) and phloroglucinol (1,3,5-).

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Question ID VK-092622