A) Carbon reduction and self-reduction.
B) Self reduction and carbon reduction.
C) Electrolysis and self-reduction.
D) Self-reduction and electrolysis.
Correct Answer: B
Solution :
\[PbO\] & \[PbS{{O}_{4}}\] get reduced by PbS itself which is already present in mixture so because the reduction took place by mixture itself, hence is known as self reduction. \[2PbO+PbS\xrightarrow{\Delta }3Pb+S{{O}_{2}}\uparrow \] \[PbS{{O}_{4}}+PbS\xrightarrow{\Delta }2Pb+2S{{O}_{2}}\uparrow \]
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