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Question

When CO2 is passed through lime water, it turns milky. The milkiness is due to the formation of:

A
CaCO3
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B
Ca(OH)2
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C
H2O
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D
CO2
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Solution

The correct option is A CaCO3
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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