Pb and Sn are extracted from their chief ore by :
Pb and Sn are extracted from their chief ore by :
A. carbon reduction and self reduction
B. self reduction and carbon reduction
C. electrolysis and self reduction
D. self reduction and electrolysis
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Correct Answer - B
The chief ore of lead is galena (PbS_ and is extracted with the help of self reduction. At the same time the chief ore of tin is tin stone `(SnO_(2))` and is isolated from that by carbon reduction (smelting).
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