Question

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

Answer 1

Correct Answer - B
`2Pbsoverset(3O_(2))(rarr)2PbOoverset(PbS)(rarr)3Pb+SO_(2)("self reduction")`
`SnO_(2)+2CrarrSn+2CO`