Question

Name the substance that gives shiny finish on the wall

Answer 1

CaCO3 (Calcium Carbonate) is a substance that gives shiny finish on the wall.

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Answer 2

The solution used for white washing of the wall is quick lime(CaO).And when this quick lime is mixed with water it gets converted into slaked lime [Ca(OH)2]and on exposure to the air it finally gets converted into Calcium carbonate[CaCO3] due to which walls shine.