Question

copper, german silver, aluminium, glass and lead-tin alloy
find odd one out and give reason

Answer 1

Germen silver

German Silver is an alloy of copper, zinc and nickel, sometimes also containing lead and tin. It was originally named for its silver-white colour, but the term 'silver' is now prohibited for alloys not containing that metal. ... German silver is extensively used because of its hardness and resistance to corrosion. thats why it is odd.