Complete the following reactions:

(i) C2H4 + O2


(ii) 4Al + 3 O2


(i) C2H4 + O2 2CO2 + 2H2O


Ethane in reaction with oxygen gives carbon dioxide and water.


(ii) 4Al + 3 O2 2Al2O3


Aluminium on reaction with oxygen gives alumina.


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