When $C O_{2}$ is passed through lime water, it turns milky. The milkiness in 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 $C a C O_{3}$
Calcium carbonate is formed as a result of passing $C O_{2}$ in lime water. The presence of Calcium carbonate gives it a white color.
$C a (O H)_{2} + C O_{2} \to C a C O_{3} + H_{2} O$

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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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