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Q.

The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the

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a

electrolysis of their molten chloride 

b

electrolysis of their molten oxides

c

reduction by aluminium

d

reduction by carbon

answer is A.

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Detailed Solution

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  • Highly reactive metals such as sodium, calcium, magnesium, aluminium, etc., are removed from their ores by electrolytic reduction.
  • These metals cannot be reduced with carbon or aluminium because they are not as reactive as they are. 
  • Metals such as sodium, potassium, calcium and magnesium are produced by electrolysis of their molten chlorides.
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