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प्रश्न
Wolframite ore is separated from tinstone by the process of ____________.
विकल्प
Smelting
Calcination
Roasting
Electromagnetic separation
उत्तर
Wolframite ore is separated from tinstone by the process of Electromagnetic separation.
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संबंधित प्रश्न
Roasting of sulphide ore gives the gas (A).(A) is a colourless gas. Aqueous solution of (A) is acidic. The gas (A) is ____________.
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
Match items in Column – I with the items of Column – II and assign the correct code.
| Column – I | Column – II |
| A. Cyanide process | (i) Ultrapure Ge |
| B. Froth floatation process | (ii) Dressing of ZnS |
| C. Electrolytic reduction | (iii) Extraction of Al |
| D. Zone refining | (iv) Extraction of Au |
| (v) Purification of Ni |
Which one of the following ores is best concentrated by the froth floatation method?
Which of the following is used for concentrating ore in metallurgy?
The incorrect statement among the following is
Which type of ores can be concentrated by the froth floatation method? Give two examples for such ores.
Describe the role of the following in the process mentioned.
Silica in the extraction of copper.
Describe the role of the following in the process mentioned.
Sodium cyanide in froth floatation.
Which of the following ore is concentrated using group 1 cyanide salt?
