What would you observe when Zinc is added to a solution of Iron (II) sulphate?

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Zn displaces Fe from its solution

Fe displaces Zn from its solution

No observation

Zn displaces sulphate from its solution

answer is A.

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Detailed Solution

A displacement reaction is a chemical reaction in which one element is replaced by another element in a chemical reaction as per the reactivity series.
The reactivity series is a chart in which metals are arranged in order of their reactivity. The metals which are found at the bottom of the reactivity series are the least reactive.
Now, a more reactive metal displaces the less reactive metal from its salt solution and this reaction is known as the displacement reaction.
Now, when Zinc is added to a solution of Iron (II) sulphate, the reaction takes place as-
$Zn + Fe {SO}_{4} \to Zn {SO}_{4} + Fe$
Therefore, Zn displaces Fe from its solution.
When zinc is added to $Fe {SO}_{4}$ solution, the colour changes from green to colourless.
$Fe {SO}_{4}$ is green in colour and $Zn {SO}_{4}$ solution is formed and greyish black iron metal is deposited.