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  9. Q341

RRB Group D (Level-1 posts) 2022 · Question 341 of 598

The first and second members, respectively, of the ketone homologous series are:

  1. APropanone, ButanoneCorrect
  2. BMethanone, Ethanone
  3. CEthanone, Propanone
  4. DButanone, Propanone

Answer: A. Propanone, Butanone

Explanation

The ketone homologous series starts with propanone (CH₃COCH₃) as the simplest ketone because a ketone requires at least three carbon atoms. The next member is butanone (CH₃COC₂H₅).

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 2) - Prepp · reliable-secondary

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