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JEE Main202628 January 2026Morning ShiftChemistryAldehydes and KetonesActual

Given below are the four isomeric compounds ( P , Q , R , S ) Identify correct statements from below. A. Q , R and S will give precipitate with 2,4- DNP . B. P and Q will give positive Bayer's test. C. Q and R will give sooty flame. D. R and S will give yellow precipitate with I ₂ / NaOH . E. Q alone will deposit silver with Tollen's reagent Choose the correct option.

Options

  1. AA, B, D and E only
  2. BA and E only
  3. CC and E only
  4. DA, C and E only

Correct answer

D. A, C and E only

Step-by-step solution

(A) Q, R, S all three give 2, 4 DNP test as they have Aldehyde/ketone group (C) Q & R gives sooty flame (E) Q gives Tollens reagent test

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