Match the following

            List – I                                             List – II

          A) PH of un polluted rain water       I)  $C{H}_3-COOON{O}_2$

          B) Acid rain                                      II) 5.6

          C) PAN                                             III) $N{O}_2,{\text{ SO}}_{\text{2}}$

          D) Freon                                          IV) ${\text{CF}}_{\text{2}}{\text{Cl}}_{\text{2}}$

                                                                   V) $CaC{l}_2$

 

  The correct order respectively for  A    B   C   D