1.

The pair of compound which cannot exist together in solution is

Answer»

`NaHCO_(3) and H_(2)O`
`Na_(2)CO_(3) and NaOH`
`NaHCO_(3) and NaOH`
`NaHCO_(3) and Na_(2)CO_(3)`

Solution :`NaHCO_(3)` being an acidicsalt will REACT with NaOH .
`NaHCO_(3) +NaOH to Na_(2)CO_(3) +H_(2)O`


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