Question

20ml of freshly prepared iron sulphate was taken in four test tube. Strips of copper, iron, zinc, aluminium of each metal were introduced in different test tube separately. A black residue was obtained in two of them. Can you identify the two metal and give reason?

Answer 1

Strips of Cu , Fe,Zn& Al of each metal were introduced in different test ... A black residue was obtained in two of them. Can you identify the 2 metals and give ...