Question

A student prepared an aqueous solution of CuSO₄ in beaker X and an aqueous solution of FeSO₄ in beaker Y. He then dropped some iron pieces in beaker X and some zinc pieces in beaker Y. After about 10 hours he observed that the solutions in X and Y respectively appear:

(A) blue and green

(B) colourless and pale green

(C) colourless and light blue

(D) greenish and colourless

Answer 1

Reaction in beaker X: Fe + CuSO₄ (blue) -> FeSO₄ (green) + Cu Reaction in beaker Y: Zn + FeSO₄ (green) -> ZnSO₄ (colourless) +Fe

The Correct Answer is D