Which of the following turns lime water milky?

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Carbon dioxide

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Sulphur trioxide

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none of the above

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Solution

The correct option is A Carbon dioxide
$C O_{2}$ on reaction with lime water $[C a (O H)_{2}]$ it turns to $C a C O_{3}$ which is milky.
$C a (O H)_{2} + C O_{2} ⟶ C a C O_{3} (C a l c i u m C a r b o n a t e)$
$⇓ (I n s o l u b l e P p t .)$

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Similar questions

Statement 1- Lime water turns milky when air is passed through the solution.

Statement 2- Air contains carbon dioxide which turns lime water milky.

When carbon dioxide combines with lime water it turns lime water

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