Test Index

CBSE Class 10 Science 2015 Term I Set 1

© examsnet.com
Question : 5 of 36
Marks: +1, -0
Reverse of the following chemical reaction is not possible :
Zn(s)+CuSO4(aq)→ZnSO4(aq)+Cu(s)\mathrm{Zn}(\mathrm{s}) + \mathrm{CuSO}_4(\mathrm{aq}) \rightarrow \mathrm{ZnSO}_4(\mathrm{aq}) + \mathrm{Cu}(\mathrm{s})
Justify this statement with reason.
Solution:  
Most reactive metal displaces less reactive metals since Cu\mathrm{Cu} is less reactive than Zn\mathrm{Zn} so it will not displace Zn\mathrm{Zn} from ZnSO4\mathrm{ZnSO}_4.
ZnSO4(aq)+Cu(s)→No reaction\mathrm{ZnSO}_4(\mathrm{aq}) + \mathrm{Cu}(\mathrm{s}) \rightarrow \text{No reaction}
© examsnet.com
Go to Question:
Prev Question
Next Question