alleryHighly reactive metals like sodium and aluminium are extracted from their ores by:
Adisplacement by iron
Belectrolysis of molten ore
Cheating in air
Dreduction with carbon
Answer & Solution
Correct answer: B. electrolysis of molten ore
Carbon is not reactive enough to reduce K, Na, Ca, Mg, Al oxides.
Their molten salts/oxides are electrolysed instead.
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