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JEE Main levelOne or more correct optionsDifficulty 2 of 3si045

Which of the following give a yellow precipitate of with ? (more than one may be correct)

  1. Aethanol
  2. Bpropan-2-ol
  3. Cbutan-2-one
  4. Dpentan-3-one

Answer: A, B, C

The iodoform test needs or (oxidised to by hypoiodite). Propan-2-ol, butan-2-one and ethanol qualify. Pentan-3-one, , has no methyl ketone unit.
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