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Metals and Non-Metals — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMetals and Non-Metals2 Marks
Question
$\text{CuSO}_4\text{(aq)}+\text{Fe(s)}\xrightarrow{\ \ \ \ }\text{FeSO}_4\text{(aq)}+\text{Cu(s)}$
$\text{FeSO}_4\text{(aq)}+\text{Zn(s)}\xrightarrow{\ \ \ \ \ }\text{ZnSO}_4\text{(aq)}+\text{Fe(s)}$
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
✓

Answer

 In the first reaction, Fe displaces Cu from $CuSO _4$ solution. So Fe is more reactive than Cu . In the second reaction, Zn displaces Fe from $FeSO _4$ solution. So Zn is more reactive than Fe . Hence it can be concluded that Zn is the most reactive metal and Cu is the least reactive metal out of zinc, copper and iron.

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