1.

A is a silvery white metal. A combines with O2 to form B at 800°C, the alloy of A is used in making the aircraft. Find A and B.

Answer»

A – Silvery white metal – Aluminium 

4 Al + 3O2 ⟶ 2Al2O3(B) (Aluminium oxide)

The alloys of aluminium, Duralumin and Magnalium are used in making the aircraft. 

A – Aluminium; B – Aluminium oxide.



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