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Standard XII
Chemistry
NCERT
Question

Methanol and ethanol are distinguished by-
  1. Treating with Schiff's reagent
  2. Treating with Lucas reagent
  3. Heating with iodine and alkali
  4. Treating with CrO3 in dil. H2SO4

A
Treating with CrO3 in dil. H2SO4
B
Treating with Schiff's reagent
C
Treating with Lucas reagent
D
Heating with iodine and alkali
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Solution
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Methanol and ethanol are distinguished by a type of test known as Iodoform. When ethanol is warmed with iodine in the presence of NaOH, it forms a yellow colored precipitate but methanol do not react positively to Iodoform test.

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