Why whitewashing walls gives a shiny finish to the walls?

Because of the formation of

M g C O_{3}

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Because of the formation of

C a C O_{3}

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Because of the formation of

C a (O H)_{2}

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None of these

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Solution

The correct option is B Because of the formation of $C a C O_{3}$
A solution of slaked lime $(C a (O H)_{2})$ is used to white wash the walls. Calcium hydroxide reacts with the carbon dioxide in air to form thin layer of calcium carbonate on the walls. It gives a shiny finish to the walls.
Hence option B is correct answer.

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Similar questions

Q. On adding a white solid ‘X’ to water, a hissing sound is heard and a lot of heat is produced along with the formation a product ‘Y’.
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(iii) Formation of Y in this case is an example of _________ reaction.

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The solution of ‘Y’ is applied on the walls of buildings during whitewashing. It reacts with carbon dioxide in air to form 'Z'. This Z gives a shiny finishing to the walls after 2-3 days of whitewashing.

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