On immersing an iron nail in CuSO4 solution for few minutes, you will observe –
A. No reaction takes place
B. The colours of solution fades away
C. The surface of iron nails acquire a black coating
D. The colour of solution changes to green
Answer:D
On immersing an iron nail in CuSO4 solution for few minutes, you will observe –
A. No reaction takes place B. The colours of solution fades away C. The surface of iron nails acquire a black coating D. The colour of solution changes to green