Pb and Sn are extracted from their chief...

Pb and Sn are extracted from their chief ore respectively by

A

Carbon reduction and self reduction.

B

Self reduction and carbon reduction.

C

Electrolysis and self reduction.

D

Self reduction and electrolysis.

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The correct Answer is:

B

`{:(PbS + 2PbO rarr 3Pb + SO_(2) ("self reduction")),(SnO_(2) + C rarr Sn + CO_(2) ("Carbon reduction")):}`

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