6.26 Outline the principles of refining of metals by the following methods :(iii)Vapour phase refining
6.26 Outline the principles of refining of metals by the following methods : (ii)Electrolytic refining
6.24 Name the processes from which chlorine is obtained as a by-product. What will happen if an aqueous solution of NaCl is subjected to electrolysis?
6.23 The choice of a reducing agent in a particular case depends on thermodynamic factor. How far do you agree with this statement? Support your opinion with two examples.
6.13 How can you separate alumina from silica in a bauxite ore associated with silica? Give equations, if any.
6.11 Which method of refining will you suggest for an element in which impurities present have chemical properties close to the properties of that elements?