MHT CET202522 Apr 2025Evening ShiftChemistryAlcohols Phenols and EthersActual

Which of the following is correct IUPAC name of catechol?

Options

ABenzene-1,2-diol
BBenzene-1,3-diol
CBenzene-1,4-diol
DBenzene-1,3,5-triol

Correct answer

A. Benzene-1,2-diol

Step-by-step solution

The compound known as catechol is the ortho-di-hydroxy derivative of benzene, with its IUPAC name reflecting substitution at positions 1 and 2. For benzene rings with two hydroxyl groups attached to adjacent carbon atoms, the correct systematic nomenclature is Benzene-1,2-diol . Comparison of the options clarifies: Benzene-1,3-diol is the systematic name for resorcinol, Benzene-1,4-diol for hydroquinone, and Benzene-1,3,5-triol for phloroglucinol.

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