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JEE Main · 2022 · 25 Jul 2022 · Shift 1 · General Principles and Processes of Isolation of Metals

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The compound(s) that is(are) removed as slag during the extraction of copper is :
(1) CaO
(2) FeO
(3)
(4) ZnO
(5) NiO

Choose the correct answer from the options given below :
  1. (A)(3) (4) Only
  2. (B)(1), (2), (5) Only
  3. (C)(1), (2) Only
  4. (D)(2) Only✓ Correct

Answer: (D)

Solution

During copper extraction, FeO (iron(II) oxide) is removed as slag by reacting with silica: (iron silicate slag). The other oxides listed are not typically present as impurities in copper ores.

JEE Main · 2022 · 25 Jul 2022 · Shift 1 · Single correct option

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