Which of the following compounds will give a yellow precipitate with iodine and alkali?

Which of the following compounds will give a yellow precipitate with iodine and alkali?
  1. Acetophenone
  2. Methyl acetate
  3. Acetamide
  4. 2-hydroxypropane

Solution

Out of the given compounds, only yellow precipitate with iodine and alkali (iodoform test). But do not perform this test because $\alpha-\mathrm{H}$ is not active due to $+M$ effect of nearby group.

Asked in: NEET 2012 (Mains)

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