1.

Pb and Sn are extracted from their chief ore by `:`A. Carbon reduction, self-reductionB. Self-reduction, carbon reductionC. Electrolytic reduction, cyanide processD. Cyanide process, electrolytic reduction

Answer» Correct Answer - B
`PbS + 2PbO rarr 3Pb + SO_(2)` (self-reduction)
`SnO + C rarr Sn + CO` (Carbon reduction).


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