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Steam distillation is used to purify an organic liquid that is

  1. Amiscible with water and non-volatile
  2. Bdecomposing at its boiling point and miscible with water
  3. Cvolatile in steam and immiscible with water
  4. Da solid with a very high melting point

Answer: C

In steam distillation the organic liquid and water each exert their own vapour pressure, so the mixture boils below . This works for liquids that are steam volatile and immiscible with water.
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