1.

(a) Name the method of refining of nickel. (b) What is the role of cryolite in the extraction of aluminium ? (c ) What is the role of limestone in the extraction of iron from its oxides ?

Answer»

Solution :(a) Mond's process (b) Lowers the melting point of alumina and makes it a good CONDUCTOR, (C ) It provides CaO (basci flux) upon HEATING which combines with ACIDIC impurities to FORM slag.


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