Question

Pb and Sn are extracted from their chief are by:-

Options

• Electrolyte reduction

• Roasting flounced by reduction with carbon.

• Self-reduction and carbon reduction

• Self-reduction and electrolysis

Answer 1

Self-reduction and carbon reduction

Explanation:

The chief element of lead is galena (PbS), which is extracted using self-reduction A⁺ at the same time that the chief element of tin is tin stone (SnO₂), which is isolated from that using carbon reduction (smelting).