Question

Iron nails are placed in cuSo4 solutions ​

Answer 1

When iron nail is dipped in Copper sulphate, it takes reaction between them and Copper sulphate changes its color from blue to light green. This should determine more reactive than copper. This could replace copper from CuSO4, and blue color and FeSO4 is in light green color.

Answer 2

Answer:

Fe+CuSO4 =FeSO4 + Cu

Explanation:

Iron being more reactive than copper will displace Cu from CuSO4 solution hence Iron sulphate (FeSO4)  and copper will be formed.