. Give the chemical names and formulae of the main ores of (i) aluminium, (ii) iron and (iii) zinc


(a) Give the chemical names and formulae of the main ores of (i) aluminium, (ii) iron and (iii) zinc.

(b) Which impurities are present in bauxite?

(c) What is red mud, how is it removed?

 

Best Answer

(a)

(i) Ores of aluminium

Ores of aluminium

(ii) Ores of iron

Ores of iron

(b) Bauxite ore contains approximately 60% aluminium oxide. The rest being sand, ferric oxide and titanium oxide.

(c) Red mud consists of ferric oxide, sand etc. left after bauxite dissolves in NaOH forming sodium aluminate and is removed by filtration.

(i) Ores of aluminium

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