Question

Which of the following can undergo a chemical reaction?

विकल्प

• MgSO₄ + Fe

• ZnSO₄ + Fe

• MgSO₄ + Pb

• CuSO₄ + Fe

Answer 1

CuSO₄ + Fe

Explanation - 

Iron is more reactive than copper and thus, can replace copper from its salt.

`"CuSO"_4("aq") + "Fe"("s") -> "FeSO"_4("aq") + "Cu"("s")`