Explain the role of the following:
(a) NaCN in the separation of ZnS and PbS.
(b) Sio, in the metallurgy of Cu containing Fe as impurity.
(c) Iodine in the refining of Ti.
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Explanation:
sio is rolled as a flux in the extraction of cupper
iodin acts as a catalyst in the refining of time
by vapor phase refining
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