1.

Which of the following reaction occurs in whitewashing of walls ?

Answer»

`2Ca+O_(2) to 2CaO`
`CaO+ H_(2)O to CA(OH)_(2)+"HEAT"`
`Ca(OH)_(2) +CO_(2) to CaCO_(3) +H_(2)O`
`Ca(OH)_(2) OVERSET(Delta)to CaO+H_(2)O`

Solution :`Ca(OH)_(2) +CO_(2) to CaCO_(3) +H_(2)O`


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