Fill in the blanks.

………. turns limewater milky.

Carbon dioxide turns limewater milky.

Explanation:

When limewater (CaOH) �₂ is passed through CO₂, the following reaction takes place:

i. In this reaction, when limewater comes in contact with the gas released in the form of an effervescence, it turns milky. This is chemical test for carbon dioxide gas.

ii. When limewater turns milky, it is confirmed that the effervescence is of carbon dioxide.