Question

why lime water turns milky when breath is blown into it?

Answer 1

the lime water turns milky when it comes in contact with CO2...

in breath..which we gives out... the CO2 content is more....

so that lime water turns milky...

Answer 2

As

You should know that chemical formula of lime water is Ca(OH).2

So when we breath co.2 is exhaled

Then

Reaction become

Ca(OH).2+CO.2=CaCO.3+H.2O

Here CaCO.3 is white precipitate so it turn milky.

Hope it helps u....