A) levigation
B) electromagnetic separation
C) floatation.
D) liquefaction
Correct Answer: B
Solution :
Cassiterite is tin stone \[(Sn{{O}_{2}})\] which is non-magnetic and contains wolframite, \[\text{FeW}{{\text{O}}_{\text{4}}}\](magnetic) impurities. These are separated by electromagnetic separation.
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