1.

CO_(2) gas is not produced when the following is storngly heated

Answer»

`CaCO_(3)`
`CA(HCO_(3))_(2)`
`K_(2)CO_(3)`
`MgCI_(2)`

Solution :Generally thermal stability of carbonaets increases from `BeCO_(3)` to `BaCO_(3)`. So `K_(2)CO_(3)` does not give `CO_(2)` on decomposition. All bicarbonates can decompose and give `CO_(2)`.


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