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प्रश्न
Which of the following can undergo a chemical reaction?
विकल्प
MgSO4 + Fe
ZnSO4 + Fe
MgSO4 + Pb
CuSO4 + Fe
उत्तर
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")`
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