Engineering
Chemistry
Roasting Calcination or Smelting
Ores and Minerals
Question
Extraction of metal from the ore cassiterite involves
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Solution
Cassiterite is SnO2.
To reduce SnO2 into Sn, carbon reduction process is used.
Sn has iron impurity.
SnO2 + C Sn + CO2
* The most appropriate answer to this question is (A,D), but because of ambiguity in language, IIT has declared (A, D) as correct answer