Metal X is a good conductor of electricity and is used for electrical wiring.
Metal Y is used to make an alloy which is resistant to corrosion and is used to make cutlery.
Metal Z is light and strong and is used in the manufacture of aircraft.
What are X, Y and Z?
1 )
X: aluminium / Y: iron / Z: copper
X: copper / Y: iron / Z: aluminium
3 )
X: aluminium / Y: copper / Z: iron
4 )
X: copper / Y: aluminium / Z: iron
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