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Condensation is an appropriate control method when the pollutant is

  • A.Insoluble in every solvent
  • B.Concentrated, with a high boiling point
  • C.Present at trace concentration
  • D.Highly volatile and dilute

Answer: B

The method recovers the material as a liquid, which makes it attractive where the vapour has value and is concentrated enough to justify the cooling. At trace concentrations the refrigeration cost becomes prohibitive for the mass recovered.

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