Question

A glass containing cold milk shows a fine coat of water droplets forming on its outer surface. How do most of the water get there? A) The cold milk causes oxygen and hydrogen from the air to combine and form water. B) Water evaporates from the milk and condenses into water on the outside of the glass. C) The water from inside the milk passes through the glass and settles outside the glass. D) Water vapor from the air comes in contact with the cold glass and forms water. WITH EXPLANATION!!!!!!!

Answer 1

Answer: Option D

Air contains water vapor. when the water vapor comes in contact with the glass ,which is cold , the water vapor form into droplets of water due to condensation .

Answer 2

since our atmosphere contain water vapour in gaseous form. these water vapour are alway lying in atmosphere but size of vapour are to small to see, because of cold milk contain in glass outer boundry of glass get cool and according to GAY LUSSAC law temprature is inversely proportional to pressure of gas. since temparature of water vapour decrease and thus pressure increase so it get combine on wall of glass , so option (d) is correct