When X gas is passed through lime water, it turns milky. The milkiness is caused due to the formation of Y. Identify X and Y from the following.

$C a (O H)_{2}$

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$H_{2} O$

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$C a C O_{3}$

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$H_{2}$

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Solution

The correct option is C
$C a C O_{3}$

When ${CO}_{2}$ is passed through lime water, it turns milky due to the formation of a white insoluble suspension of ${CaCO}_{3}$ , which is also known as limestone.

$C a (O H)_{2} (a q) + C O_{2} (g) \to C a C O_{3} (s) + H_{2} O (l)$

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When X gas is passed through lime water, it turns milky. The milkiness is caused due to the formation of Y. Identify X and Y from the following.

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