Extraction of zinc from zinc blende is a...

Extraction of zinc from zinc blende is achived by

A

electrolytic reduction

B

roasting followed by thermite reduction

C

roasting followed by carbon reduction

D

roasting followed by self reduction

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In aluminothermic process, aluminium is used as
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The flux used in the extraction of copper is
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A free state of a metal is called as its state.
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What is flux ?
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