In which of the following beakers reaction will take place?

Options

A. I and III only
B. I and IV only
C. II and IV only
D. III and IV only

Answer

D

Explanation

Zinc and aluminium are more reactive than iron thus, can displace iron from iron sulphate solution but copper is less reactive than iron thus, will not show any reaction.
`Zn_((s)) +FeSO_(4(aq)) to ZnSO_(4(aq)) +Fe_((s))`
`2Al_((s)) +3FeSO_(4(aq)) to Al_(2)(SO_(4))_(3(aq)) +3Fe_((s))`