Question

3.)Assertion: After white washing the walls, ashing white finish on wall is obtained after two to three
days
Reason:--Calcium oxide reacts with CO2 form calcium hydrogen carbonate which gives shiny white
finish​

Answer 1

Answer:

Explanation:

After white washing the walls a shiny white finish on walls is obtained after two to three days reason Calcium oxide reacts with carbon dioxide to form calcium hydrogen carbonate which gives shiny white finish

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

Answer 2

Explanation:

assertion is true and reason is false ..

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