Extraction of metal from the ore cassiterite involves (IIT-JEE, 2011)
A
Carbon reduction of an oxide ore
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B
Self-reduction of sulphide ore
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C
Removal of copper impurity
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D
Removal of iron impurity
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Solution
The correct options are A Carbon reduction of an oxide ore D Removal of iron impurity Cassiterite ore (SnO2): SnC2+C→SnO+COSnC2+C→Sn+CO2}Carbonreduction