1.

CaCO_(3)overset(Delta)underset(1073)rarr CaO+CO_(2) (Reverse reaction takes place). To prevent backward reaction

Answer»

`CO_(2)` is REMOVED from reaction MIXURE
`CO_(2)` is added to the reaction mixture
`CAO` is removed from reaction mixture
`CaCO_(3)` is added to reaction mixture 

Answer :A


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