Select the correct matching in the following table in connection with the given chemical reaction :

CuSO4 + Fe \(\longrightarrow\) FeSO4 + Cu

Initial colour of solution Final colour of solution Final colour of iron nail Type of reaction
a. Pale green Blue Grey Displacement
b. Blue Pale green Brownish Double displacement
c. Blue Light Blue Grey Double displacement
d. Blue Pale green Brownish Displacement
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1 Answers

Correct answer is (d)

\(\underset{\text{blue}}{CuSO_4} + Fe(s)\) \(\longrightarrow \underset{\text{Pale green}}{FeSO_4(aq)} + \underset{\text{Brownish}}{Cu(s)}\)

Initial colour of solution = blue

 Final colour of solution = Pale green

Final colour of iron nail = Brownish (Because copper metal deposits on iron nail).

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