1.

Which of the following is not balanced equation?

Answer»

`Ca(HO)_(2) + CO_(2) to CaCO_(3) + H_(2)O`
`Fe + CuSO_(4) to FeSO_(4) + CU`
`Kc1O_(4) overset (Delta) (rarr) KC1 + 2O_(2)`
`Cu + 2HNO_(3) to Cu(NO_(3))_(2) + 2NO_(2) +H_(2)O`

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