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Why walls give shiny appearance after 2 or3 days

Posted by Mrinal Sharma 5 years, 8 months ago

CBSE > Class 10 > Science

2 answers

Yogita Ingle 5 years, 8 months ago

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.

1Thank You

Shreya_ S❤️ 5 years, 8 months ago

Cao combines with co2 to give caco3 i.e. clcium carbonate

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CBSE > Class 10 > Science