A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells.

(a) Name the metals X and Y.


(b) Which of the two metals is more reactive: X or Y?


(c) Name one ore or metal X. Also write its chemical formula.


(d) Name one ore of metal Y. Also write its chemical formula.


(e) Name one alloy of metal X and one alloy of metal Y.

(a) X is aluminium and Y is zinc, this can be determined by the above given statement.

(b) Among the two metals X and Y, X is more reactive then that of the Y.


(c) the name of the ore is Bauxite and its chemical formula is Al2O3.2H2O.


(d) The name of the ore of metal Y is Calamine and its chemical formula is ZnCO3.


(e) The name of the alloy of metal X is Duralumin and the name of the alloy of metal Y is Brass.


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