Pb and Sn are extracted from their chief ores by:

Pb and Sn are extracted from their chief ores by:

  1. A

    self-reduction and carbon reduction

  2. B

    carbon reduction and self-reduction

  3. C

    electrolysis and self-reduction

  4. D

    self-reduction and electrolysis

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    Solution:

    2PbS  +  3O2  Δ2PbO  +  2SO22PbO  +  PbS  Δ3Pb  +  SO2Selfreduction

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