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InterviewSolution
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Fill in the blanks:1. Minerals that contains a high percentage of metal from which it can be extracted conveniently and economically are called …………… 2. …………… helps us to select a suitable reducing agent and appropriate temperature range for reduction. 3. If E° is positive, then the ∆G is …………… 4. Chemical formula of cuprite is …………… 5. Gravity separation is also called as …………… 6. …………… ore is purified by gravity separation process. 7. In froth floatation process …………… acts as a collector. 8. Sodium cyanide is added to depresses the floatation property of ZnS by forming a layer of …………… 9. The process of gold reduced to its elemental state is called ……………10. Leaching process is a …………… reaction. |
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Answer» 1. Ores 2. Ellingham diagram 3. negative 4. Cu2O 5. Hydraulic washing 6. oxide 7. Sodium ethyl xanthate 8. Na2[Zn(CN)4] – Sodium negative 9. Cementation 10. Redox |
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