The alloy of which of the following metals, is usually used for making bells?
Iron (Fe)
Lead (Pb)
Copper (Cu)
Aluminium (Al)
Bell metal which is an alloy of copper (Cu-80%) and tin (Sn-20%), is used for making high-quality bells.
Which of the following metals should be chosen to react with CuSO4 solution to make its color disappear?