1.

Which of the following diagrams us correctly related to different steps involved in the extraction of Zn from zinc blende ore?

Answer»



Both`(a)`and`(b)`
None of these

Solution :• Concentration `RARR` The ore is concentated forst by gravity method and then by froth floatation process.
• Rasting `rarr` Concentated ore is then roasted at `900^(@)-1000^(@)C` to convert `ZnS` and `ZnSO_(4)`to `ZNO`.
• Readuction of ckoe `rarr` The oxide `ZnO` is reduced with coke at about `1500^(@)C` to obtain metallic zinc.
• Electrolytic refining `rarr` Pure zinc is obtained by electrolysis zinc in presence of ACIDIFIED `ZnSO_(4)` as ELECTROLYTE.


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