Class X Sciences
[papers from previous years]

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



The correct answer isĀ (D) greenish and colourless......
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