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ChemistryJEE Main 2 Apr 2026, Shift 2·Q16·MCQ·Moderate

Aldehydes, Ketones & Acids · Intramolecular cannizzaro of glyoxal

An organic compound “x” where molar ratio of C, O and H are equal, on treatment with 50% KOH under reflux followed by acidification produced “y”. The most likely structure of “y” is:

[Molar mass of ‘x' is 58 g mol−1^{-1}]

  1. (1)
  2. (2)CHX3−CH=CH−CH=O\ce{CH3-CH=CH-CH=O}
  3. (3)
  4. (4)

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See the full 2 Apr 2026, Shift 2 paper