Question

Option 20
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
a) $\text{Mg}$
(b) $\text{Ag}$
(c) $\text{Zn}$
(d) $\text{Cu}$

Answer 1

Option (b) is correct.
$\text{Ag}$ is the least reactive metal. So, it can be displaced by the metals like $\text{Mg, Zn, Cu}$ which are more reactive than $\text{Ag}$. (Reactivity series- $\text{Mg> Zn> Cu> Ag}$.)