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By which process Pb and Sn are extracted...

By which process Pb and Sn are extracted respectively are:

A

Carbon reduction - self reduction

B

Self reduction - carbon reduction

C

Electrolytic reduction - cyanide process

D

Cyanide process - electrolytic reduction

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The correct Answer is:
B
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By which process Pba and Sn are extracted respectively are:

[" By which process "Pb" and "" Sn are extracted by "-],[" (A) Extracted carbon reduction: Self reduction "],[" (B) Self reduction: Carbon reduction "],[" (C) Electrolytic reduction: Cyanide process "],[" (D) Cynide process electrolytic reduction "]

Pb and Sn are extracted from their chief ore by :

Pb and Sn are extracted from their chief ore by

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