Compound P ( C ₈ H ₈ O ) gives a red orange precipitate with 2,4 -DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, P gives an aromatic product Q that produces effervescence on treating with aq. N

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Compound P ( C ₈ H ₈ O ) gives a red orange precipitate with 2,4 -DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, P gives an aromatic product Q that produces effervescence on treating with aq. NaHCO ₃ . Compounds P and Q, respectively, are :

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Correct answer: D. 4

Compound P ( C ₈ H ₈ O ) gives a red-orange precipitate with 2,4 -DNP reagent, indicating the presence of a carbonyl group. P does not reduce Fehling's reagent, which implies it is either a ketone or an aromatic aldehyde. The requirement of "drastic oxidation" strongly suggests that P is a ketone. Ketones resist mild oxidation and require drastic conditions (such as chromic acid) to undergo C-C bond cleavage, whereas aldehydes are easily oxidized. Acetophenone ( C ₆ H ₅ COCH ₃ ) is a ketone that fits the molecular

Compound P ( C ₈ H ₈ O ) gives a red orange precipitate with 2,4 -DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, P gives an aromatic product Q that produces effervescence on treating with aq. NaHCO ₃ . Compounds P and Q, respectively, are :

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