Question

Lead and tin are extracted from their chief ores respectively, by:

• A. carbon reduction and self reduction
• B. self reduction and carbon reduction
• C. electrolysis and self reduction
• D. self reduction and electrolysis

Answer 1

Answer: (B)

self reduction and carbon reduction

Reactions for the extraction can be written as:

Self-reduction of Lead

$PbS+2PbO\to 3Pb+S{O}_2$

Carbon reduction of Sn
$2SnO+C\to 2Sn+C{O}_2$

Option B is correct.