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Isolation of Elements question

2010 · Shift 1 · Q24
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Isolation of Elements question

2010 · Shift 1 · Q24

JEE AdvancedChemistryIsolation of ElementsMCQ+3 / −1
Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper inculcated chalcanthite (CuSO 4{}_44​ . 5H 2{}_22​ O), atacamite (Cu 2{}_22​ Cl(OH) 3{}_33​), cuprite (Cu 2{}_22​ O), copper glance (Cu 2{}_22​ S) and malacite (Cu 2{}_22​(OH) 2{}_22​ CO 3{}_33​). However, 80% of the world copper production comes from the ore of chalcopyrite (CuFeS 2{}_22​). The extraction of copper from chalcopynite involves partial roasting, removal of iron and self-reduction.In self-reduction, the reducing species is
  1. A
    S
  2. B
    O 2−{}^{2-}2−
  3. C
    S 2−{}^{2-}2−
  4. D
    SO 2{}_22​
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