• # question_answer Which of the following has no dipole moment [DCE 2002] A)                 $C{{O}_{2}}$    B)                         $S{{O}_{3}}$ C)                 ${{O}_{3}}$      D)                 ${{H}_{2}}O$

Linear molecular has zero dipole moment $C{{O}_{2}}$ has linear structure so it does not have the dipole moment $O=C=O$.