Question

Why does the lime water turn milky when air is blown from mouth into a test tube containing lime water

Answer 1

We inhale oxygen and exhale carbon dioxide.
When lime water ca(oh)2 react with CO2 it became milky.
When we release CO2 in lime water it became miky..


I hope it will help u..
Thanks...

Answer 2

When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour
hope this answer helps you