1.

Generally CaCO_(3) is insoluble in water but in the presence of carbon dioxide it is soluble. This is because.

Answer»

of the formation of carbonic acid.
of the formation of SOLUBLE `Ca(HCO_(3))_(2)`.
`CO_(2)` makes `CaCO_(3)` porous thus dissolving it in WATER.
of the formation of highly concentrated acids.

Answer :B


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