The Formula Of Carnallite Is:

The chief impurity present in red bauxite is

Auto reduction process is used in the extraction of:

The method of zone refining of metals is based on the principal of:

 In the extraction of copper from its sulphide are, the metal is formed by reduction of Cu₂O with:

The major role of fluorspar (CaF₂) which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na₃AlF₆) is:

 The molten metal, obtained after the element of copper pyrites in the blast furnace, has the composition of:

In metallurgy of iron, when lime stone is added to the blast furnace, the calcium ion ends up in

 In the alumino-thermite process, aluminium acts as

The major role of fluorspar (CaF₂) which is added in small amount in the electrolytic reduction of alumina dissolved in fused cryolite (Na₃AlF₆) is

 In the commercial electrochemical process for aluminum extraction, the electrolyte used is