| Aditya, a class 8 student investigated the reactivity of four metals, iron, copper, zinc and an unknown metal X. He arranged three experimental set-ups as shown in the diagram and observed the changes carefully. |
|
| If reactions occur in all the three beakers then, the metal X is |
A) Cu
B) Mg
C) Fe
D) Au
Correct Answer: B
Solution :
Metal X should be more reactive than Zn to displace Zn from \[\text{ZnS}{{\text{O}}_{\text{4}}}\] solution. Among the metals given, Mg is more reactive than Zn while Cu, Fe and Au are less reactive than Zn.
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