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Electrochemical Principles

Which of the ...

Question

Which of the following processes is used in extractive metallurgy of Magnesium?

Fused salt electrolysis

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Self-reduction

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Aqueous solution electrolysis

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Thermite reduction

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Solution

The correct option is A
Fused salt electrolysis

The reduction potential of Magnesium is lesser than that of water. Hence, aqueous electrolysis is useless - where water is reduced instead.
Only fused salt electrolysis produces magnesium.

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Magnese metal is extracted from manganese dioxide by a reduction process by making use of :
(a) carbon (b) hydrogen (c) electrolysis (d) aluminium

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