MHT CET202520 Apr 2025Evening ShiftChemistryGeneral Organic ChemistryActual
What it the IUPAC name of following compounds?
Options
- A2,5-Dimethylpentan-1-ol
- B1,3-Dimethylpentan-2-ol
- C2,5-Dimethylcyclopentanol
- D1,3-Dimethylcyclopentan-2-ol
Correct answer
C. 2,5-Dimethylcyclopentanol
Step-by-step solution
The compound is a cyclopentanol derivative with methyl substituents. The hydroxyl-bearing carbon is assigned position 1, and numbering is chosen to minimize locant values for substituents. Clockwise numbering places methyl groups at C2 and C5, giving locants (1,2,5). Counterclockwise numbering yields (1,4,5), which is higher. Locant set (1,2,5) is preferred by IUPAC low-locant rules. The systematic name becomes 2,5-dimethylcyclopentanol, where the hydroxyl position is implied at C1 and omitted. Option A and B are i