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प्रश्न
Name the method used for the refining of Nickel metal.
Name the method of refining of nickel.
Name the method that is used for refining of nickel.
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उत्तर १
The Mond process (vapour phase refining) is used to refine nickel.
उत्तर २
Method used for refining of nickel metal is Mond’s process. In this process nickel is heated in a steam of carbon monoxide, which yields in the formation of nickel carbonyl.
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संबंधित प्रश्न
What criterion is followed for the selection of the stationary phase in chromatography?
Describe ‘froth floatation process’ for concentration of sulphide ore.
What happens when Silver is leached with NaCN in the presence of air?
In which of the following method of purification, metal is converted to its volatile compound which is decomposed to give pure metal?
(i) Heating with stream of carbon monoxide.
(ii) Heating with iodine.
(iii) Liquation.
(iv) Distillation.
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
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 |
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Electrolytic reduction method is used for the extraction of ______.
Refining using liquation method is the most suitable for metals with ______.
Describe a method for refining nickel.
