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CBSE Class 10 Answered

Why do walls shine some days after white washing?
Asked by | 27 Jun, 2011, 12:00: AM
answered-by-expert Expert Answer
In whitewash Calcium hydroxide is present.Calcium hydroxide reacts slowly with the carbon dioxide in air to form a thin layer of calcium carbonate on the walls. Calcium carbonate is formed after two to three days of white washing and gives a shiny finish to the walls.
Answered by | 27 Jun, 2011, 05:12: PM

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