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Question

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+CSnO+COSnC2+CSn+CO2}Carbonreduction

Also iron is present as impurity in this ore.

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