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प्रश्न
Describe the roles of the following: NaCN in froth floatation process
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उत्तर
In the froth floatation process, NaCN is used as a depressant. It selectively allows PbS to come with the froth but prevents ZnS from coming to the froth
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संबंधित प्रश्न
Explain:
Zone refining
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
Indicate the principle behind the method used for the refining of Nickel.
Outline the principles behind the refining of metals by the following methods:
Zone refining method
Outline the principles behind the refining of metals by the following methods:
Chromatographic method
Write the principle behind the following methods of refining:
Vapour-phase refining
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.
Assertion: Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.
Reason: Copper is extracted by hydrometallurgy.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Describe a method for refining nickel.
