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

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Answers

2016-02-11T12:30:14+05:30
I think the answer should be (D) greenish and colourless 
as Fe displaces Cu from its salt solution in beaker X and forms FeSO4 that is green in colour as Fe is more reactive than Cu
and Zn displaces Fe from its solution in beaker Y and forms ZnSO4 that is colourless as Zn is more reactive than Fe
 

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