Chemistry
Grade-10
Easy
Question
Smelting is not used for the reduction of which metal ores?
- Tin (Sn)
- Aluminium (Al)
- Magnesium (Mg)
- Both b & c
Hint:
Aluminium and Magnesium.
The correct answer is: Both b & c
Aluminium is too high in the electrochemical series i.e., it is a stronger reducing agent than carbon and therefore it cannot be extracted from its ore using carbon reduction.
Magnesium cannot be extracted from magnesium oxide by reduction with carbon, because magnesium is high in the reactivity series and metals high in the reactivity series have more affinity for oxygen than carbon.
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