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Manipal MET2020ChemistryGeneral Principles and Processes of Isolation of Metals

Calcination is used in metallurgy for removal of

Options

  1. Awater and sulphide
  2. Bwater and CO ₂
  3. CCO ₂ and H ₂ ~S
  4. DH ₂ O and H ₂ ~S

Correct answer

D. H ₂ O and H ₂ ~S

Step-by-step solution

Calcination is used in metallurgy proceeds only with the expulsion of some small molecules like water, CO ₂, SO ₂ etc. without any chemical changes. e.g. gathered 2 Al ( OH )₃ 1500 ^ C Al ₂ O ₃+3 H ₂ O FeCO ₃ FeO + CO ₂ gathered

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