Question

what is dry icewhat happened when the pressure under which is stored is decreased to atmosphere

Answer 1

Dry ice is the form of Carbon Dioxide, which sublime to form Carbon dioxide gas without undergoing liquid state.Term 'dry' is used to denote sublimation. On sublimation vapour of Carbon Dioxide forms a foggy denae appearence denoted by term ice.
*Then the dry ice will sublime and form Carbon Dioxide gas without undergoing liquid state.

Answer 2

DRY ICE REFERS TO THE SOLID FORM OF Carbon dioxide . if the pressure under which it is stored is decreased,it becomes gas and it is called as sublimation.