Question

10 mL of freshly prepared iron sulphate was taken in each of four testtubes. Strips of copper, iron, zinc and aluminium were introduced,each metal in a different test tube. A black residue was obtained in two test tube. The right pair ofmetals forming the precipitates is
a. copper and zinc b.aluminium and copper
c. iron and aluminium d.zinc and aluminium

Answer 1

hope you like this.............