Question

When air is blown from mouth into test tube containing lime water , the lime water turned milky due to presence of * 1 point Nitrogen Water vapours Carbon dioxide Oxygen

Answer 1

Answer:

PLEASE MARK AS THE BRAINLIEST

Explanation:

Lime water is calcium hydroxide solution. On reacting with carbon dioxide it forms insoluble calcium carbonate which remains in water as a suspension rendering a milky white color to it.

Answer 2

Answer:

Carbon Dioxide

Explanation:

CO2 gas has the property of turning lime water milky. Since lime water is actually Ca(OH)2, this on reaction with CO2 gas forms a precipitate CaCO3. CaCO3 gives the milky colour.

Ca(OH)2 + CO2 ------> CaCO3 + H2O