MDCAT Chemistry MCQ #294

How many distinct structural isomers of ketones exist for the molecular formula C5H10O according to IUPAC nomenclature?

MDCAT Chemistry MCQ #294

  1. Question 1

    Q1. How many distinct structural isomers of ketones exist for the molecular formula C5H10O according to IUPAC nomenclature?

    • A) 1
    • B) 2
    • C) 3
    • D) 4

    Answer: 3

    Explanation: C5H10O has three ketone isomers: 2-pentanone, 3-pentanone, and 3-methyl-2-butanone. 2 is tempting but misses the branched isomer.