1.

What is an alloy ? Name the alloys and their constituents used for : (i) making aeroplanes (ii) soldering.

Answer»

Solution :Alloy is a homogeneous mixture of two metals or a metal with a non-metal.
(i) The alloy used for MAKING aeroplanes is duralumin :
Duralumin : Al = 95%, CU = 4%, MG = 0.5%, Mn = 0.5%
(ii) The alloy used for SOLDERING is solder :
Solder : Pb = 50%, Sn = 50%.


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