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