question_answer 60)

  Dry ice is : (a) solid\[N{{H}_{3}}\]                   (b) solid \[S{{O}_{2}}\]                   (c) solid\[C{{O}_{2}}\]                    (d) solid \[{{N}_{2}}\]

Answer:

  (c) Solid \[C{{O}_{2}}\] is a snow like substance and is called dry ice. It sublimes and leaves no residue. It is used as a refrigerant.