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प्रश्न
Describe the roles of the following: NaCN in froth floatation process
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उत्तर
In the froth floatation process, NaCN is used as a depressant. It selectively allows PbS to come with the froth but prevents ZnS from coming to the froth
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संबंधित प्रश्न
What is the principle behind the zone refining of metals?
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Match the items of Column I with the items of Column II and assign the correct code:
| Column I | Column II |
| (A) Coloured bands | (1) Zone refining |
| (B) Impure metal to volatile complex | (2) Fractional distillation |
| (C) Purification of Ge and Si | (3) Mond Process |
| (D) Purification of mercury | (4) Chromatography |
| (5) Liquation |
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