Chapter 5: General principle and Isolation of elements
Important Questions
1. What is the role of graphite in the electrometallurgy of aluminium?
2. Describe the principle involved in each of the following processes.
1. Monds process for refining of Nickel.
2. Column chromatography for purification of rare elements.
3. Describe the following:
1. The role of cryolite in electro-metallurgy of aluminium.
2. The role of carbon monoxide in the refining of crude nickel.
4. (a) Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?
(b) Out of ‘C’ and ‘CO’, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
5. (a) Give an example of zone refining of metals.
(b) What is the role of cryolite in the metallurgy of aluminum?
