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प्रश्न
The incorrect statement among the following is
विकल्प
Nickel is refined by Mond’s process
Titanium is refined by Van Arkel’s process
Zinc blende is concentrated by froth floatation
In the metallurgy of gold, the metal is leached with dilute sodium chloride solution
उत्तर
In the metallurgy of gold, the metal is leached with dilute sodium chloride solution
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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 |
Wolframite ore is separated from tinstone by the process of ____________.
Which of the following is used for concentrating ore in metallurgy?
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.
In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
Which of the following ore is concentrated using group 1 cyanide salt?
