Advertisements
Advertisements
प्रश्न
Write the principle behind the following methods of refining:
Vapour-phase refining
उत्तर
Vapour-phase refining:
Vapour-phase refining is the process of refining metal by converting it into its volatile compound and then, decomposing it to obtain a pure metal. To carry out this process,
(i) the metal should form a volatile compound with an available reagent.
(ii) the volatile compound should be easily decomposable, so that the metal can be easily recovered. This method is used for refining nickel, zirconium and titanium.
APPEARS IN
संबंधित प्रश्न
Name the method used for the refining of zirconium.
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
What happens when Copper matte is charged into silica lined converter and hot air blast is blown?
In the extraction of chlorine from brine:
(i) ∆GΘ for the overall reaction is negative.
(ii) ∆GΘ for the overall reaction is positive.
(iii) EΘ for overall reaction has negative value.
(iv) EΘ for overall reaction has positive value.
Assertion: Zirconium can be purificed by Van Arkel method.
Reason: ZrI4 is volatile and decomposes at 1800 K.
Purification of crude metals by removing metallic and non-metallic impurities is known as ______ of metals.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
Refining using liquation method is the most suitable for metals with ______.
Describe a method for refining nickel.
Describe a method for refining nickel.
