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ChemistryJEE Main 23 Jan 2026, Shift 2·Q16·MCQ·Moderate

Alcohols, Phenols & Ethers · Cleavage of ethers by hi

A mixed ether (P), when heated with excess of hot concentrated hydrogen iodide produces two different alkyl iodides which when treated with aq. NaOH give compounds (Q) and (R). Both (Q) and (R) give yellow precipitate with NaOI. Identify the mixed ether (P):
  1. (1)
  2. (2)
  3. (3)
  4. (4)

Flawed question. Two options are correct: option (4) as drawn is the same ethyl sec-butyl ether as the keyed option (1) (and even read as ethyl isopropyl ether it gives ethanol and propan-2-ol, both iodoform-positive); no evident intended version. It is shown for completeness and is left out of practice tests.

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