10th Class Science Solved Paper - Science-2015 Set-I

  • question_answer
    Reverse of the following chemical reaction is not possible:
                \[Zn(s)+CuS{{O}_{4}}(aq)\to ZnS{{O}_{4}}(aq) + Cu(s)\]
                Justify this statement with reason.

    Answer:

    Most reactive metal displaces less reactive metals since Cu is less reactive than Zn so it will not displace Zn from \[ZnS{{O}_{4}}\]
                \[ZnS{{O}_{4(aq)}}+C{{u}_{(s)}}\to \text{No reaction}\]


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