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MCQMediumJEE Main 2026 · 21 January, Shift 1Aldehydes & Ketones

Chemistry Question from JEE Main 2026 · 21 January, Shift 1

An organic compound "P" of molecular formula C6H12O3C_6H_{12}O_3 gives positive Iodoform test but negative Tollen's test. When "P" is treated with dilute acid, it produces "Q". "Q" gives positive Tollen's test and also Iodoform test. The structure of "P" is:

  • A
    Structure showing CH3-CO-CH with OCH3 substituent and adjacent CH2 bearing OCH3, representing an acetal-containing ketone.
  • B
    Structure showing CH3-CO-C(CH3)(OCH3)2, a ketone with two methoxy groups attached to the same central carbon atom.
  • C
    Structure showing CH3-CO-CH2-CH with two methoxy substituents, one as OCH3 and one terminal methoxy group on the chain.
  • D
    Structure showing aldehyde H-CO-CH2-CH2-CH with two methoxy substituents, indicating an aldehyde-containing methoxy derivative.

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