Question

give the names of two alloys of aluminium which have some amount of Copper or Magnesium. how are these more advantageous than pure aluminium

Answer 1

Aluminium and Cooper- duralumin(or duralumin)
Aluminium and Magnesium- Magnalium

Duralumin- light weight and strong
used in the bodies of aeroplane and vehicles

Magnalium- light and strong
used in balancing and other light instruments
also in aeroplane and vehicles