When $C O_{2}$ is passed through lime water, it turns milky. The milkiness is due to the formation of:

C a C O_{3}

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C a (O H)_{2}

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H_{2} O

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C O_{2}

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Solution

The correct option is A $C a C O_{3}$
Lime water is calcium hydroxide and when carbon dioxide is passed it reacts with calcium hydroxide to form caicium carbonate which turns lime water milky.

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What visible change is observed when $C O_{2}$ is passed through lime water and that change is due to the formation of which compound?

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