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Ca(OH)2+CO2toCaCO3+H2O. In this reaction...

`Ca(OH)_2+CO_2``to``CaCO_3`+`H_2O`. In this reaction shiny finish to walls is due to _____

A

`Ca(OH)_2`

B

`CaCO_3`

C

`CO_2`

D

`H_2O`

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