Question

Which of the following metal can be reduced by carbon reduction as well as self reduction?

• A. Fe
• B. Al
• C. Pb
• D. None of these

Answer 1

The correct option is C Pb

Self-reduction of $Pb$

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

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

Reduction with Carbon

$2PbO+C\to 2Pb+C{O}_2$

So only Pb can be reduced by carbon reduction as well as self-reduction.