1.

Which of the following is not a single displacement reaction ?

Answer»

`CuO+H_(2) to H_(2)O+Cu`
`Zn+CuSO_(4) to ZnSO_(4)+Cu`
`4NH_(3)+5O_(2) to 4NO+ 6H_(2)O`
`Zn+2HCl to ZnCl_(2)+H_(2)`

Solution :`4NH_(3)+5O_(2) to 4NO+ 6H_(2)O`


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