(i) \[Fe\,S{{O}_{4}}+Zn\to Zn\,S{{O}_{4}}+Fe\] |
(ii) \[Zn\,S{{O}_{4}}+Fe\to Fe\,S{{O}_{4}}+Zn\] |
(iii) \[2Au+2HCl\to 2Au\,\,Cl+{{H}_{2}}\] |
(iv) \[Mg+Cu\,S{{O}_{4}}\to Mg\,S{{O}_{4}}+Cu\] |
A) (i) and (ii)
B) (ii) and (iii)
C) (iii) and (iv)
D) (i) and (iv)
E) None of these
Correct Answer: B
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