Which of the following can undergo a chemical reaction?

Options

A. `MgSO_(4)+Fe`
B. `ZnSO_(4)+Fe`
C. `MgSO_(4)+Pb`
D. `CuSO_(4)+Fe`

Answer

d

Explanation

In options (a) and (b) Fe is less reactive than Mg and Zn, so it is not able to replace these hence, no reaction takes place
In option (c) Pb is less reactive than Mg. so it is not able to replace it, hence no reaction takes place.
In option (d), Fe Is more reactive than Cu so it replaces Cu from `CuSO_(4)`, hence reaction takes place.