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Isolation of Elements question

2023 · Shift 1 · Q1
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  5. /2023 · Shift 1 · Q1

Isolation of Elements question

2023 · Shift 1 · Q1

JEE AdvancedChemistryIsolation of ElementsMultiple correct+4 / −2
The correct statement(s) related to processes involved in the extraction of metals is(are) :
  1. A
    Roasting of Malachite produces Cuprite.
  2. B
    Calcination of Calamine produces Zincite.
  3. C
    Copper pyrites is heated with silica in a reverberatory furnace to remove iron.
  4. D
    Impure silver is treated with aqueous KCN\mathrm{KCN}KCN in the presence of oxygen followed by reduction with zinc metal.
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