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Give a chemical test to distinguish between the following.
Ethanol and methanol
Answer
Answer
AIiodoform test: reagent: I2 / NaOH, warm; positive: ethanol; observation: yellow precipitate of iodoform (CHI3); other: no yellow precipitate
| Test | Ethanol | Methanol |
| Iodoform test ($\mathrm{I_2}$ / NaOH, warm) | Yellow precipitate of iodoform ($\mathrm{CHI_3}$) | No yellow precipitate |
From ISC 2026 Improvement Chemistry Paper 1, question 10(ii).