Question

why does milk rise upon boil but water doesnt ? what is the technical reason

Answer 1

we must be aware of the fact that milk is not a
normal liquid like water .milk is far more complex as it is made up of 87 prcnt water,
4 prcnt proteins ,5 prcnt lactose ..
when we boil milk fat,sugar,proteins and minerals get seprated .
as these are lighter than milk they collect on surface to form cream .
so as the milk is heated ,out of the 87 prcnt of water ..some of its gets converted into vapour
these bubbles of vapours start rise above ..

hope this will help you..

Answer 2

may i not sure but this is because of the gaseous particles in milk when the milk is going to boil ,the gaseous particle get formed pressure in milk