What is the role of cryolite in the metallurgy of aluminium?

Answer the Following: (i) What si the role of cryolite in the metallurgy of aluminium? (ii) Differentiate between roasting and calcination. (iii) What is meant by the term 'chromatography'?

Answer the Following: (i) What si the role of cryolite in the metallurgy of aluminium? (ii) Differentiate between roasting and calcination. (iii) What is meant by the term 'chromatography'? OR Write the reaction taking place in different zones of the blast furnace to obtain Iron.

Describe the role of cryolite in the metallurgy of aluminium. Write the chemical equations for the involved reactions.

(i) What is the role of cryolite in the extraction of aluminium ? (ii) What is the role of limestone in the extraction of iron from its oxides ?

(i) Name the method of refining of nickel (ii) What is the role of cryolite in the extraction of aluminium ? (iii) What is the role of limestone in the extraction of iron from its oxides ?

Describe the following : - (i) The role of cryolite in electro metallurgy of aluminium. (ii) The role of carbon monoxide in the refining of crude nickel.

Describe the following : - (i) The role of cryolite in electro metallurgy of aluminium. (ii) The role of carbon monoxide in the refining of crude nickel.

Describe the following: (i) Role of depressant in forth floatation process. (ii) Role of silica in the metallurgy of copper. (iii) Role of cryolite in the metallurgy of aluminium.