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JEE Main202225 Jul 2022Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

The compound(s) that is(are) removed as slag during the extraction of copper is : (1) CaO (2) FeO (3) Al 2 O 3 (4) ZnO (5) NiO Choose the correct answer from the options given below

Options

  1. A3 , 4 only
  2. B2 only
  3. C1 , 2 , 5 Only
  4. D1 , 2 only

Correct answer

B. 2 only

Step-by-step solution

Copper ores contain iron as the main impurity. Iron react with silica and is removed as slag. Therefore, the slag formed in the blast furnace is FeSiO 3 . The reaction that takes place in the blast furnace is as follows: FeO + SiO 2 → FeSiO 3 (slag)

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