Question

If an iron rod is dipped in $- nFEº$ solution.

• A. Blue colour of the solution turns green
• B. Brown layer is deposited on iron rod
• C. No change occurs in the colour of the solution
• D. Blue colour of the solution vanishes (e) None of the above

Answer 1

Answer: (B)

Brown layer is deposited on iron rod

Answer 2

Brown layer is deposited on iron rod because Cu has greater than reduction potential than that of $Fe^{2 +}$.